body{
    margin: 0;
    padding: 0;
    font-family: Arial;
}

.reg_btn{
    width: 150px;
    height: 50px;
    border-radius: 30px;
}
.modal{
    visibility: hidden;
    opacity: 0;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.329);
    display: grid;
    justify-content: center;
    align-items: center;
    transition: 0.4s;
}
.modal_content{
    z-index: 2;
    position: relative;
    margin: 30px;
    background-color: #e2e2e2;
    max-width: 500px;
    padding: 45px;
    border: 1px solid #4e4e4e;
    box-shadow: 1px 5px 20px -2px rgba(34, 60, 80, 0.26);
    transform: scale(0);
    transition: 0.6s;
}

.modal_close_btn{
    cursor: pointer;
    border: none;
    background-color: transparent;
    padding: 3px;
    position: absolute;
    top: 15px;
    right: 15px;
    opacity: 0.9;
    transition: 0.3s;
}
.modal_close_btn:hover{
    opacity: 0.5;
}

.modal.open{
    visibility: visible;
    opacity: 1;
}
.modal.open .modal_content{
    transform: scale(1);
}