Botón con CSS super chulo

by Yolanda Robles

HTML

<div class="octagon"></div>
<div class="circle">
     <h1>Octuweb</h1>

</div>

CSS

.octagon {
    width: 16.5em;
    height: 16.6em;
    background-color: #EC6060;
    -webkit-transform: perspective(999px) rotate(22.5deg);
    -moz-transform: rotate(22.5deg);
    -ms-transform: rotate(22.5deg);
    transform: perspective(999px) rotate(22.5deg);
    margin: auto;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}
.octagon:before {
    content:"";
    position: absolute;
    top: 0;
    left: 0;
    border-bottom: 4.785em solid #EC6060;
    border-left: 4.785em solid #fff;
    border-right: 4.785em solid #fff;
    width: 7em;
    height: 0;
}
.octagon:after {
    content:"";
    position: absolute;
    bottom: 0;
    left: 0;
    border-top: 4.785em solid #EC6060;
    border-left: 4.785em solid #fff;
    border-right: 4.785em solid #fff;
    width: 7em;
    height: 0;
}
.circle {
    background: rgb(255, 255, 255);
    border-radius: 100%;
    border: 2px solid #fff;
    cursor: pointer;
    margin: auto;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 15em;
    height: 15em;
    overflow: hidden;
    -webkit-transform: translateZ(0);
    -moz-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
}
.circle h1 {
    color: rgba(189, 185, 199, 0);
    font-family:'Raleway', sans-serif;
    font-weight: 900;
    font-size: 1.6em;
    line-height: 8.2em;
    text-align: center;
    text-transform: uppercase;
    -webkit-font-smoothing: antialiased;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-transition: color 0.8s ease-in-out;
    -moz-transition: color 0.8s ease-in-out;
    -ms-transition: color 0.8s ease-in-out;
    transition: color 0.8s ease-in-out;
}
.circle:before, .circle:after {
    border-radius: 0%;
    content:"";
    position: absolute;
    top: 0;
    left: 0;
    width: inherit;
    height: inherit;
    box-shadow: inset 10.6em 0 0 rgba(236, 96, 96, 0.2),...