.btn {
    width: 300px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    font-size: 42px;
    color: #fff;
    text-decoration: none;

    font-weight: 600;
    position: relative;
    margin: 0 15px;
}
.btn span {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.btn.viber {
    background: linear-gradient(180deg, #8A78E7 0%, #7E65FF 100%);
    box-shadow: 0px 6px 8px rgba(160, 144, 241, 0.3);
}
.btn.telegram {
    padding-left: 40px;
    background: linear-gradient(180deg, #5CA9F1 0%, #44A4FF 100%);
    box-shadow: 0px 6px 8px rgba(116, 172, 225, 0.3);
}
.btn.viber span {
    left: 110px;
}
.btn.telegram span {
    left: 85px;
}

.btn img {
    position: absolute;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.btn.viber img {
    left: 24px;
}
.btn.telegram img {
    left: 24px;
}


@media screen and (max-width: 600px) {
    .btn {
        width: 160px;
        height: 50px;
        font-size: 20px;
        border-radius: 10px;
    }
    .btn img {
        width: 21px;
        height: 21px;
    }
    .btn.viber span {
        left: 55px;
    }
    .btn.telegram span {
        left: 45px;
    }
    .btn.viber img {
        left: 17px;
    }
    .btn.telegram img {
        left: 12px;
    }
}

@media screen and (max-width: 360px) {
    .btn {
        font-size: 18px;
        border-radius: 10px;
    }
    .btn img {
        left: 15px;
        width: 18px;
        height: 18px;
    }
    .btn.telegram {
        padding-left: 30px;
    }
}