HTMLify

/*--Global Styles--*/
@import url("https://fonts.googleapis.com/css?family=Fjalla+One");

body {
    background-color: #222;
    font-family: "Fjalla One", sans-serif;
    text-transform: uppercase;
    height: 100vh;
    display: grid;
    place-items: center;
}

/*--Button Styles--*/
.btn-slice {
    padding: 1.2rem 2.5rem;
    border: 2px solid #ffffff;
    border-radius: 0rem;
    color: #ffffff;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.3rem;
    position: relative;
    transition: all 1000ms cubic-bezier(0.89, -0.17, 0.14, 1.225);
    transition-timing-function: cubic-bezier(0.89, -0.17, 0.14, 1.225);
}

.btn-slice .top {
    position: relative;
    height: 6px;
    overflow: hidden;
    top: 0;
    transition: all 300ms cubic-bezier(1, -0.055, 0.025, 1.04);
    transition-timing-function: cubic-bezier(1, -0.055, 0.025, 1.04);
    transition-delay: 0.35s;
}

.btn-slice .bottom {
    position: relative;
    height: 6px;
    overflow: hidden;
    bottom: 0;
    transition: all 300ms cubic-bezier(1, -0.055, 0.025, 1.04);
    transition-timing-function: cubic-bezier(1, -0.055, 0.025, 1.04);
    transition-delay: 0.35s;
}

.btn-slice .bottom span {
    top: -6px;
    position: absolute;
    left: 0;
}

.btn-slice:hover .top {
    top: -5px;
    transition-delay: 0.35s;
}

.btn-slice:hover .bottom {
    bottom: -5px;
    transition-delay: 0.35s;
}

.btn-slice:hover,
.btn-slice:focus,
.btn-slice:active {
    margin-left: 10px;
}

.btn-slice::before {
    content: "";
    height: 1px;
    width: 60px;
    background-color: #ffffff;
    position: absolute;
    margin-top: 6px;
    right: -35px;
    transition: all 1000ms cubic-bezier(0.89, -0.17, 0.14, 1.225);
    transition-timing-function: cubic-bezier(0.89, -0.17, 0.14, 1.225);
}

.btn-slice:hover::before {
    width: 145%;
}