a.btun {
    font-size: 20px;
    padding: 12px 15px;
    border-radius: 26px
}

.arr {
    color: #eeeeee;
    background-color: #34317A;
    margin: 1em 0;

    &::after {
        display: inline-block;
        padding-left: 8px;
        content: "\0279E";
        -webkit-transition: transform 0.3s ease-out;
        -moz-transition: transform 0.3s ease-out;
        -ms-transition: transform 0.3s ease-out;
        -o-transition: transform 0.3s ease-out;
        transition: transform 0.3s ease-out;
    }

    &:hover {
        color: #fcfcfc;
        background-color: #34317A;

        &::after {
            -webkit-transform: translateX(4px);
            -moz-transform: translateX(4px);
            -ms-transform: translateX(4px);
            -o-transform: translateX(4px);
            transform: translateX(4px);
        }
    }
}