Borlabs Button

.btn {
    background: #fff;
    border-radius: 4px;
    border-width: 0;
    color: #222;
    display: inline-block;
    font-family: "Roboto", Helvetica, Arial, Verdana, sans-serif;
    font-weight: bold;
    line-height: 18px;
    padding: 16px 32px;
    text-decoration: none
}

.btn.btn-shadow {
    box-shadow: 0 10px 30px rgba(0,0,0,0.2)
}

.btn.btn-gradient {
    background-size: 100%;
    position: relative;
    z-index: 100
}

.btn.btn-gradient::before {
    border-radius: inherit;
    content: "";
    display: block;
    height: 100%;
    left: 0;
    position: absolute;
    opacity: 0;
    -webkit-transition: opacity 0.6s;
    transition: opacity 0.6s;
    top: 0;
    width: 100%;
    z-index: -100
}

.btn.btn-gradient:hover::before {
    opacity: 1
}

.btn.btn-cb {
    background: transparent;
    background-image: -webkit-linear-gradient(315deg, #00dbe8 0%, #3b39b9 100%);
    background-image: linear-gradient(135deg, #00dbe8 0%, #3b39b9 100%);
    color: #fff
}

.btn.btn-cb::before {
    background-image: -webkit-linear-gradient(315deg, #3b39b9 0%, #00dbe8 100%);
    background-image: linear-gradient(135deg, #3b39b9 0%, #00dbe8 100%)
}

/* <a href="#" class="btn btn-gradient btn-shadow btn-cb">Button</a> */
/* <button class="btn btn-gradient btn-shadow btn-cb">Button</button> */