.box {
    background-color: rgb(18, 18, 18);
    height: 400px;
    width: 600px;
    margin: 130px auto;
    text-align: center;
    border-radius: 5px;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
}

.tit {
    color: #DFB163;
    font-size: 30px;
    padding-top: 50px;
}

.para {
    font-size: 17px;
    padding: 0px 8px;
    color: aliceblue;
}

input {
    padding: 10px;
    width: 460px;
    margin-top: 30px;
    text-align: center;
    font-size: 18px;
    border: 2px solid #DFB163;
    border-radius: 10px;
    background-color: rgb(18, 18, 18);
}
/* button{
            padding: 10px;
            width: 250px;
            margin-top: 25px;
            background-color: #ff6e2a;
            border: none;
            color: white;
            font-size: 15px;
            border-radius: 5px;
        } */
@media screen and (max-width:630px) {
    .box {
        width: 98%;
        height: 431px;
    }

    input {
        width: 70%;
    }
}

.credit a {
    text-decoration: none;
    color: #fff;
    font-weight: 800;
}

.credit {
    color: #fff;
    text-align: center;
    margin-top: 10px;
    font-family: Verdana,Geneva,Tahoma,sans-serif;
}

    .credit span {
        color: tomato;
        font-size: 20px;
    }

.form-control {
    max-width: 282px;
    width: 100%;
}

.btn-lg, .btn-group-lg > .btn {
    /* padding: 0.5rem 1rem; */
    font-size: 1.25rem;
    line-height: 1.5;
    border-radius: 0;
}

.btn-block {
    display: block;
    width: 100%;
    max-width: 284px;
}

@media screen and (max-width:338px) {
    .box {
        width: 98%;
        height: 470px;
    }

    input {
        width: 70%;
    }

    .form-control {
        max-width: 243px;
        width: 100%;
    }
}