.login-wrapper {
    position: relative;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

.gradient-button {
    font-size: 18px;
    color: #fff;
    line-height: 1.2;
    text-transform: uppercase;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
    min-width: 160px;
    height: 42px;
    border-radius: 21px;
    border-color: white;
    background: white;
    background: -webkit-linear-gradient(left, #1A9CB2, #1372B8);
    background: -o-linear-gradient(left, #1A9CB2, #1372B8);
    background: -moz-linear-gradient(left, #1A9CB2, #1372B8);
    background: linear-gradient(left, #1A9CB2, #1372B8);
    position: relative;
    z-index: 1;
    -webkit-transition: all 0.4s;
    -o-transition: all 0.4s;
    -moz-transition: all 0.4s;
    transition: all 0.4s;
    border-style: none;
}

    .gradient-button::before {
        content: "";
        display: block;
        position: absolute;
        z-index: -1;
        width: 100%;
        height: 100%;
        border-radius: 21px;
        background-color: #555555;
        top: 0;
        left: 0;
        opacity: 0;
        -webkit-transition: all 0.4s;
        -o-transition: all 0.4s;
        -moz-transition: all 0.4s;
        transition: all 0.4s;
    }

    .gradient-button:hover {
        color: #1372B8;
        background: white;
        border: 2px solid #1372B8;
    }

    .gradient-button:focus {
        outline: 0;
    }