.call-modal {
    width: 500px;
    margin: 0;
    position: relative;
}

@media only screen and (max-width: 768px) {
    .call-modal {
        width: calc(100% - 30px)
    }
}

.call-modal__close {
    position: absolute;
    top: 20px;
    right: 20px;
    cursor: pointer
}