CSS按钮悬停动画

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html

css

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html

<div class="main-container">
  <h1>Colorful CSS Buttons</h1>
  <section>
    <h2>Border - Open</h2>
    <button class="btn btn-green btn-border-o">Emerald</button>
    <button class="btn btn-blue btn-border-o">Peter River</button>
    <button class="btn btn-purple btn-border-o">Amethyst</button>
    <button class="btn btn-navy btn-border-o">Wet Asphalt</button>
    <button class="btn btn-orange btn-border-o">Carrot</button>
    <button class="btn btn-red btn-border-o">Alizarin</button>
  </section>
  <section>
    <h2>Border</h2>
    <button class="btn btn-green btn-border">Emerald</button>
    <button class="btn btn-blue btn-border">Peter River</button>
    <button class="btn btn-purple btn-border">Amethyst</button>
    <button class="btn btn-navy btn-border">Wet Asphalt</button>
    <button class="btn btn-orange btn-border">Carrot</button>
    <button class="btn btn-red btn-border">Alizarin</button>
  </section>
  <section>
    <h2>Border Reversed - Open</h2>
    <button class="btn btn-green btn-border-rev-o">Emerald</button>
    <button class="btn btn-blue btn-border-rev-o">Peter River</button>
    <button class="btn btn-purple btn-border-rev-o">Amethyst</button>
    <button class="btn btn-navy btn-border-rev-o">Wet Asphalt</button>
    <button class="btn btn-orange btn-border-rev-o">Carrot</button>
    <button class="btn btn-red btn-border-rev-o">Alizarin</button>
  </section>
  <section>
    <h2>Border Reversed</h2>
    <button class="btn btn-green btn-border-rev">Emerald</button>
    <button class="btn btn-blue btn-border-rev">Peter River</button>
    <button class="btn btn-purple btn-border-rev">Amethyst</button>
    <button class="btn btn-navy btn-border-rev">Wet Asphalt</button>
    <button class="btn btn-orange btn-border-rev">Carrot</button>
    <button class="btn btn-red btn-border-rev">Alizarin</button>
  </section>
  <section>
    <h2>Fill Vertical - Open</h2>
    <button class="btn btn-green btn-fill-vert-o">Emerald</button>
    <button class="btn btn-blue btn-fill-vert-o">Peter River</button>
    <button class="btn btn-purple btn-fill-vert-o">Amethyst</button>
    <button class="btn btn-navy btn-fill-vert-o">Wet Asphalt</button>
    <button class="btn btn-orange btn-fill-vert-o">Carrot</button>
    <button class="btn btn-red btn-fill-vert-o">Alizarin</button>
  </section>
  <section>
    <h2>Fill Vertical</h2>
    <button class="btn btn-green btn-fill-vert">Emerald</button>
    <button class="btn btn-blue btn-fill-vert">Peter River</button>
    <button class="btn btn-purple btn-fill-vert">Amethyst</button>
    <button class="btn btn-navy btn-fill-vert">Wet Asphalt</button>
    <button class="btn btn-orange btn-fill-vert">Carrot</button>
    <button class="btn btn-red btn-fill-vert">Alizarin</button>
  </section>
  <section>
    <h2>Fill Horizontal - Open</h2>
    <button class="btn btn-green btn-fill-horz-o">Emerald</button>
    <button class="btn btn-blue btn-fill-horz-o">Peter River</button>
    <button class="btn btn-purple btn-fill-horz-o">Amethyst</button>
    <button class="btn btn-navy btn-fill-horz-o">Wet Asphalt</button>
    <button class="btn btn-orange btn-fill-horz-o">Carrot</button>
    <button class="btn btn-red btn-fill-horz-o">Alizarin</button>
  </section>
  <section>
    <h2>Fill Horizontal</h2>
    <button class="btn btn-green btn-fill-horz">Emerald</button>
    <button class="btn btn-blue btn-fill-horz">Peter River</button>
    <button class="btn btn-purple btn-fill-horz">Amethyst</button>
    <button class="btn btn-navy btn-fill-horz">Wet Asphalt</button>
    <button class="btn btn-orange btn-fill-horz">Carrot</button>
    <button class="btn btn-red btn-fill-horz">Alizarin</button>
  </section>
</div>

css

/* Reset */
.animate, .btn, .btn-border-o:before, .btn-border-o:after, .btn-border:before, .btn-border:after, .btn-border-rev-o:before, .btn-border-rev-o:after, .btn-border-rev:before, .btn-border-rev:after, .btn-fill-vert-o:before, .btn-fill-vert-o:after, .btn-fill-vert:before, .btn-fill-vert:after, .btn-fill-horz-o:before, .btn-fill-horz-o:after, .btn-fill-horz:before, .btn-fill-horz:after {
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

/* Main Styles */
.main-container {
  width: 100%;
  max-width: 750px;
  margin: 0 auto;
  padding: 0 15px;
}

h1 {
  line-height: 1;
  padding: 25px 0;
  border-bottom: 1px solid #2c3e50;
  font-size: 35px;
  color: #2c3e50;
  text-align: center;
}

section {
  padding: 60px 0 61px;
  text-align: center;
  position: relative;
}
section h2 {
  margin-bottom: 15px;
  font-weight: normal;
  font-size: 17px;
  color: #D2D2D2;
  text-align: center;
}
section:not(:last-child):after {
  content: '';
  width: 70%;
  height: 1px;
  border-bottom: 1px dashed #2c3e50;
  opacity: .5;
  position: absolute;
  bottom: -1px;
  left: 15%;
}

.btn {
  display: inline-block;
  line-height: 35px;
  margin: 8px;
  padding: 0 15px;
  font-size: 15px;
  position: relative;
  opacity: .999;
  border-radius: 3px;
}

.btn-border-o {
  background-color: transparent;
  border: 1px solid #d0d0d0;
  color: #B8B8B8;
}
.btn-border-o:before, .btn-border-o:after {
  content: '';
  border-style: solid;
  position: absolute;
  z-index: 5;
  border-radius: 3px;
  box-sizing: content-box;
}
.btn-border-o:before {
  width: 0;
  height: 100%;
  border-width: 1px 0 1px 0;
  top: -1px;
  left: 0;
  -webkit-transition-delay: 0.05s;
          transition-delay: 0.05s;
}
.btn-border-o:after {
  width: 100%;
  height: 0;
  border-width: 0 1px 0 1px;
  top: 0;
  left: -1px;
}
.btn-border-o:hover:before {
  width: 100%;
}
.btn-border-o:hover:after {
  height: 100%;
}
.btn-border-o.btn-green:before, .btn-border-o.btn-green:after {
  border-color: #2ecc71;
}
.btn-border-o.btn-green:hover {
  color: #2ecc71;
}
.btn-border-o.btn-blue:before, .btn-border-o.btn-blue:after {
  border-color: #3498db;
}
.btn-border-o.btn-blue:hover {
  color: #3498db;
}
.btn-border-o.btn-purple:before, .btn-border-o.btn-purple:after {
  border-color: #9b59b6;
}
.btn-border-o.btn-purple:hover {
  color: #9b59b6;
}
.btn-border-o.btn-navy:before, .btn-border-o.btn-navy:after {
  border-color: #34495e;
}
.btn-border-o.btn-navy:hover {
  color: #34495e;
}
.btn-border-o.btn-orange:before, .btn-border-o.btn-orange:after {
  border-color: #e67e22;
}
.btn-border-o.btn-orange:hover {
  color: #e67e22;
}
.btn-border-o.btn-red:before, .btn-border-o.btn-red:after {
  border-color: #e74c3c;
}
.btn-border-o.btn-red:hover {
  color: #e74c3c;
}

.btn-border {
  background-color: #e5e5e5;
  border: 1px solid #e5e5e5;
  color: #a6a6a6;
}
.btn-border:before, .btn-border:after {
  content: '';
  border-style: solid;
  position: absolute;
  z-index: 5;
  border-radius: 3px;
  box-sizing: content-box;
}
.btn-border:before {
  width: 0;
  height: 100%;
  border-width: 1px 0 1px 0;
  top: -1px;
  left: 0;
  -webkit-transition-delay: 0.05s;
          transition-delay: 0.05s;
}
.btn-border:after {
  width: 100%;
  height: 0;
  border-width: 0 1px 0 1px;
  top: 0;
  left: -1px;
}
.btn-border:hover {
  background-color: transparent;
}
.btn-border:hover:before {
  width: 100%;
}
.btn-border:hover:after {
  height: 100%;
}
.btn-border.btn-green:before, .btn-border.btn-green:after {
  border-color: #2ecc71;
}
.btn-border.btn-green:hover {
  color: #2ecc71;
}
.btn-border.btn-blue:before, .btn-border.btn-blue:after {
  border-color: #3498db;
}
.btn-border.btn-blue:hover {
  color: #3498db;
}
.btn-border.btn-purple:before, .btn-border.btn-purple:after {
  border-color: #9b59b6;
}
.btn-border.btn-purple:hover {
  color: #9b59b6;
}
.btn-border.btn-navy:before, .btn-border.btn-navy:after {
  border-color: #34495e;
}
.btn-border.btn-navy:hover {
  color: #34495e;
}
.btn-border.btn-orange:before, .btn-border.btn-orange:after {
  border-color: #e67e22;
}
.btn-border.btn-orange:hover {
  color: #e67e22;
}
.btn-border.btn-red:before, .btn-border.btn-red:after {
  border-color: #e74c3c;
}
.btn-border.btn-red:hover {
  color: #e74c3c;
}

.btn-border-rev-o {
  background-color: transparent;
  border: 1px solid #d0d0d0;
  color: #B8B8B8;
}
.btn-border-rev-o:before, .btn-border-rev-o:after {
  content: '';
  border-style: solid;
  position: absolute;
  z-index: 5;
  border-radius: 3px;
  box-sizing: content-box;
}
.btn-border-rev-o:before {
  width: 0;
  height: 100%;
  border-width: 1px 0 1px 0;
  top: -1px;
  right: 0;
  -webkit-transition-delay: 0.05s;
          transition-delay: 0.05s;
}
.btn-border-rev-o:after {
  width: 100%;
  height: 0;
  border-width: 0 1px 0 1px;
  bottom: 0;
  left: -1px;
}
.btn-border-rev-o:hover:before {
  width: 100%;
}
.btn-border-rev-o:hover:after {
  height: 100%;
}
.btn-border-rev-o.btn-green:before, .btn-border-rev-o.btn-green:after {
  border-color: #2ecc71;
}
.btn-border-rev-o.btn-green:hover {
  color: #2ecc71;
}
.btn-border-rev-o.btn-blue:before, .btn-border-rev-o.btn-blue:after {
  border-color: #3498db;
}
.btn-border-rev-o.btn-blue:hover {
  color: #3498db;
}
.btn-border-rev-o.btn-purple:before, .btn-border-rev-o.btn-purple:after {
  border-color: #9b59b6;
}
.btn-border-rev-o.btn-purple:hover {
  color: #9b59b6;
}
.btn-border-rev-o.btn-navy:before, .btn-border-rev-o.btn-navy:after {
  border-color: #34495e;
}
.btn-border-rev-o.btn-navy:hover {
  color: #34495e;
}
.btn-border-rev-o.btn-orange:before, .btn-border-rev-o.btn-orange:after {
  border-color: #e67e22;
}
.btn-border-rev-o.btn-orange:hover {
  color: #e67e22;
}
.btn-border-rev-o.btn-red:before, .btn-border-rev-o.btn-red:after {
  border-color: #e74c3c;
}
.btn-border-rev-o.btn-red:hover {
  color: #e74c3c;
}

.btn-border-rev {
  background-color: #e5e5e5;
  border: 1px solid #e5e5e5;
  color: #a6a6a6;
}
.btn-border-rev:before, .btn-border-rev:after {
  content: '';
  border-style: solid;
  position: absolute;
  z-index: 5;
  border-radius: 3px;
  box-sizing: content-box;
}
.btn-border-rev:before {
  width: 0;
  height: 100%;
  border-width: 1px 0 1px 0;
  top: -1px;
  right: 0;
}
.btn-border-rev:after {
  width: 100%;
  height: 0;
  border-width: 0 1px 0 1px;
  bottom: 0;
  left: -1px;
  -webkit-transition-delay: 0.05s;
          transition-delay: 0.05s;
}
.btn-border-rev:hover {
  background-color: transparent;
}
.btn-border-rev:hover:before {
  width: 100%;
}
.btn-border-rev:hover:after {
  height: 100%;
}
.btn-border-rev.btn-green:before, .btn-border-rev.btn-green:after {
  border-color: #2ecc71;
}
.btn-border-rev.btn-green:hover {
  color: #2ecc71;
}
.btn-border-rev.btn-blue:before, .btn-border-rev.btn-blue:after {
  border-color: #3498db;
}
.btn-border-rev.btn-blue:hover {
  color: #3498db;
}
.btn-border-rev.btn-purple:before, .btn-border-rev.btn-purple:after {
  border-color: #9b59b6;
}
.btn-border-rev.btn-purple:hover {
  color: #9b59b6;
}
.btn-border-rev.btn-navy:before, .btn-border-rev.btn-navy:after {
  border-color: #34495e;
}
.btn-border-rev.btn-navy:hover {
  color: #34495e;
}
.btn-border-rev.btn-orange:before, .btn-border-rev.btn-orange:after {
  border-color: #e67e22;
}
.btn-border-rev.btn-orange:hover {
  color: #e67e22;
}
.btn-border-rev.btn-red:before, .btn-border-rev.btn-red:after {
  border-color: #e74c3c;
}
.btn-border-rev.btn-red:hover {
  color: #e74c3c;
}

.btn-fill-vert-o {
  background-color: transparent;
  border: 1px solid #d0d0d0;
  color: #B8B8B8;
  overflow: hidden;
}
.btn-fill-vert-o:before, .btn-fill-vert-o:after {
  content: '';
  width: 100%;
  height: 0;
  opacity: 0;
  position: absolute;
  left: 0;
  z-index: -1;
}
.btn-fill-vert-o:before {
  top: 50%;
}
.btn-fill-vert-o:after {
  bottom: 50%;
}
.btn-fill-vert-o:hover {
  color: #fff;
}
.btn-fill-vert-o:hover:before, .btn-fill-vert-o:hover:after {
  height: 50%;
  opacity: 1;
}
.btn-fill-vert-o.btn-green:before, .btn-fill-vert-o.btn-green:after {
  background-color: #2ecc71;
}
.btn-fill-vert-o.btn-green:hover {
  border-color: #2ecc71;
}
.btn-fill-vert-o.btn-blue:before, .btn-fill-vert-o.btn-blue:after {
  background-color: #3498db;
}
.btn-fill-vert-o.btn-blue:hover {
  border-color: #3498db;
}
.btn-fill-vert-o.btn-purple:before, .btn-fill-vert-o.btn-purple:after {
  background-color: #9b59b6;
}
.btn-fill-vert-o.btn-purple:hover {
  border-color: #9b59b6;
}
.btn-fill-vert-o.btn-navy:before, .btn-fill-vert-o.btn-navy:after {
  background-color: #34495e;
}
.btn-fill-vert-o.btn-navy:hover {
  border-color: #34495e;
}
.btn-fill-vert-o.btn-orange:before, .btn-fill-vert-o.btn-orange:after {
  background-color: #e67e22;
}
.btn-fill-vert-o.btn-orange:hover {
  border-color: #e67e22;
}
.btn-fill-vert-o.btn-red:before, .btn-fill-vert-o.btn-red:after {
  background-color: #e74c3c;
}
.btn-fill-vert-o.btn-red:hover {
  border-color: #e74c3c;
}

.btn-fill-vert {
  background-color: #e5e5e5;
  border: 1px solid #e5e5e5;
  color: #a6a6a6;
  overflow: hidden;
}
.btn-fill-vert:before, .btn-fill-vert:after {
  content: '';
  width: 100%;
  height: 0;
  opacity: 0;
  position: absolute;
  left: 0;
  z-index: -1;
}
.btn-fill-vert:before {
  top: 50%;
}
.btn-fill-vert:after {
  bottom: 50%;
}
.btn-fill-vert:hover {
  color: #fff;
}
.btn-fill-vert:hover:before, .btn-fill-vert:hover:after {
  height: 50%;
  opacity: 1;
}
.btn-fill-vert.btn-green:before, .btn-fill-vert.btn-green:after {
  background-color: #2ecc71;
}
.btn-fill-vert.btn-green:hover {
  border-color: #2ecc71;
}
.btn-fill-vert.btn-blue:before, .btn-fill-vert.btn-blue:after {
  background-color: #3498db;
}
.btn-fill-vert.btn-blue:hover {
  border-color: #3498db;
}
.btn-fill-vert.btn-purple:before, .btn-fill-vert.btn-purple:after {
  background-color: #9b59b6;
}
.btn-fill-vert.btn-purple:hover {
  border-color: #9b59b6;
}
.btn-fill-vert.btn-navy:before, .btn-fill-vert.btn-navy:after {
  background-color: #34495e;
}
.btn-fill-vert.btn-navy:hover {
  border-color: #34495e;
}
.btn-fill-vert.btn-orange:before, .btn-fill-vert.btn-orange:after {
  background-color: #e67e22;
}
.btn-fill-vert.btn-orange:hover {
  border-color: #e67e22;
}
.btn-fill-vert.btn-red:before, .btn-fill-vert.btn-red:after {
  background-color: #e74c3c;
}
.btn-fill-vert.btn-red:hover {
  border-color: #e74c3c;
}

.btn-fill-horz-o {
  background-color: transparent;
  border: 1px solid #d0d0d0;
  color: #B8B8B8;
  overflow: hidden;
}
.btn-fill-horz-o:before, .btn-fill-horz-o:after {
  content: '';
  width: 0;
  height: 100%;
  opacity: 0;
  position: absolute;
  top: 0;
  z-index: -1;
}
.btn-fill-horz-o:before {
  left: 50%;
}
.btn-fill-horz-o:after {
  right: 50%;
}
.btn-fill-horz-o:hover {
  color: #fff;
}
.btn-fill-horz-o:hover:before, .btn-fill-horz-o:hover:after {
  width: 50%;
  opacity: 1;
}
.btn-fill-horz-o.btn-green:before, .btn-fill-horz-o.btn-green:after {
  background-color: #2ecc71;
}
.btn-fill-horz-o.btn-green:hover {
  border-color: #2ecc71;
}
.btn-fill-horz-o.btn-blue:before, .btn-fill-horz-o.btn-blue:after {
  background-color: #3498db;
}
.btn-fill-horz-o.btn-blue:hover {
  border-color: #3498db;
}
.btn-fill-horz-o.btn-purple:before, .btn-fill-horz-o.btn-purple:after {
  background-color: #9b59b6;
}
.btn-fill-horz-o.btn-purple:hover {
  border-color: #9b59b6;
}
.btn-fill-horz-o.btn-navy:before, .btn-fill-horz-o.btn-navy:after {
  background-color: #34495e;
}
.btn-fill-horz-o.btn-navy:hover {
  border-color: #34495e;
}
.btn-fill-horz-o.btn-orange:before, .btn-fill-horz-o.btn-orange:after {
  background-color: #e67e22;
}
.btn-fill-horz-o.btn-orange:hover {
  border-color: #e67e22;
}
.btn-fill-horz-o.btn-red:before, .btn-fill-horz-o.btn-red:after {
  background-color: #e74c3c;
}
.btn-fill-horz-o.btn-red:hover {
  border-color: #e74c3c;
}

.btn-fill-horz {
  background-color: #e5e5e5;
  border: 1px solid #e5e5e5;
  color: #a6a6a6;
  overflow: hidden;
}
.btn-fill-horz:before, .btn-fill-horz:after {
  content: '';
  width: 0;
  height: 100%;
  opacity: 0;
  position: absolute;
  top: 0;
  z-index: -1;
}
.btn-fill-horz:before {
  left: 50%;
}
.btn-fill-horz:after {
  right: 50%;
}
.btn-fill-horz:hover {
  color: #fff;
}
.btn-fill-horz:hover:before, .btn-fill-horz:hover:after {
  width: 50%;
  opacity: 1;
}
.btn-fill-horz.btn-green:before, .btn-fill-horz.btn-green:after {
  background-color: #2ecc71;
}
.btn-fill-horz.btn-green:hover {
  border-color: #2ecc71;
}
.btn-fill-horz.btn-blue:before, .btn-fill-horz.btn-blue:after {
  background-color: #3498db;
}
.btn-fill-horz.btn-blue:hover {
  border-color: #3498db;
}
.btn-fill-horz.btn-purple:before, .btn-fill-horz.btn-purple:after {
  background-color: #9b59b6;
}
.btn-fill-horz.btn-purple:hover {
  border-color: #9b59b6;
}
.btn-fill-horz.btn-navy:before, .btn-fill-horz.btn-navy:after {
  background-color: #34495e;
}
.btn-fill-horz.btn-navy:hover {
  border-color: #34495e;
}
.btn-fill-horz.btn-orange:before, .btn-fill-horz.btn-orange:after {
  background-color: #e67e22;
}
.btn-fill-horz.btn-orange:hover {
  border-color: #e67e22;
}
.btn-fill-horz.btn-red:before, .btn-fill-horz.btn-red:after {
  background-color: #e74c3c;
}
.btn-fill-horz.btn-red:hover {
  border-color: #e74c3c;
}

JavaScript

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