.go_to_lesson {
    color: 
    #FFF;
    width: 100%;
    font-size: 16px;
    padding: 0;
    line-height: 40px;
    font-weight: 300;
    border-radius: 25px;
    text-transform: none;
}

.go_to_lesson:hover {
    background-color: #0356e7;
}