.container-a, 
.container-b
{
    width: 950px;
    max-width: 100%;
    background-color: rgba(227, 227, 227, 0.541);
    border: 1px solid  rgba(199, 199, 199, 0.541);
    border-radius: 8px;
    padding: 20px;
    height: auto;
    box-shadow: -5px 10px 18px -1px rgba(0, 0, 0, 0.507);
    overflow: hidden;
    transition: height .73s ease-in;
}

.container-a
{
    margin: 2% auto;
}

.btn-a, .btn-b
{
    max-width: 220px;
    width: 100%;
    margin-left: 6%;
}

.container-a .submit-p
{
   
    margin-top: 20px;
    text-align: center;
}

.box
{
    display: flex;
    justify-content: center;
    max-width: 80%;
    border: 1px solid rgba(212, 212, 212, 0.731);
    background-color: rgb(255, 255, 255);
    box-shadow: inset 0px 0px 12px 1px rgba(49, 49, 49, 0.438);
    border-radius: 6px;
    height: auto;
    padding: 15px;
    margin: 0 auto;
}

.input-box
{
    text-align: center;
    padding: 2px;
    margin: 5px;
}

.input-box textarea
{
    max-width: 600px;
    width: 100%;
    border: 1px solid rgba(63, 63, 63, 0.292);
    border-radius: 5px;
}

.input-box input
{
    width: 100%;
    border-radius: 5px;
    border: 1px solid rgba(0, 0, 0, 0.272);
    padding: 4px;
}

.active
{
    height: auto;
}