HomeWorks/MarkupModule/src/sass/base/_button.scss

.btn {
    background: #34547A;
    font-family: Roboto;
    font-style: normal;
    font-weight: normal;
    text-align: center;
    cursor: pointer;
    color: #FFFFFF;
    &__header {
        width: 225px;
        height: 65px;
        font-size: 16px;
        line-height: 26px;
        letter-spacing: 0.1em;
    }
}