:active, :hover, :focus {
    outline: 0!important;
    outline-offset: 0;
}

.animation-btn::before,
.animation-btn::after {
  position: absolute;
  content: "";
}

.animation-btn {
    position: relative;
    display: inline-block;
    width: auto;
    height: auto;
    text-align: center;
    background-color: transparent;
    border: none;
    cursor: pointer;
    margin: 0px 0px 15px;
    min-width: 170px;
}

.animation-btn span {
    position: relative;
    display: inline-block;
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 1px;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 20px;
    transition: 0.3s;
}



.animation-btn::before {
    background-color: #2c90e4;
    transition: 0.3s ease-out;
}

.animation-btn span {
    color: #2c90e4;
    border: 1px solid #2c90e4;
    transition: 0.2s;
}

.animation-btn span:hover {
    color: rgb(255, 255, 255);
    transition: 0.2s 0.1s;
}

/* 9. hover-slide-right */

.animation-btn.hover-slide-right::before {
    top: 0;
    bottom: 0;
    left: 0;
    height: 100%;
    width: 0%;
}

.animation-btn.hover-slide-right:hover::before {
    width: 100%;
}