.callback_modal_window{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    justify-content: center;
    align-items: center;

    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}
.callback_modal_window .message{
    position: relative;
    width: clamp(320px, 70%, 500px);
    padding: 40px 20px;
    font-size: 2.4em;
    font-weight: bold;
    text-align: center;
    background-color: var(--main-green);
    box-shadow: 1px 1px 15px #076527;
    border-radius: .25rem;
    overflow: hidden;
}
.callback_modal_window .message .sm{
    font-size: .8em;
    color: #303030;
}
.callback_modal_window .close{
    position: absolute;
    right: 0;
    top: 0;
    padding: 10px 14px;
    cursor: pointer;
    font-size: 1em;
    transition: .2s;
    border-radius: 0 0 0 .25rem;
}
.callback_modal_window .close:hover{
    background-color: #0dbe49;
}