.contact-title{
    text-align: center;
    padding: 2% 0;
}
.contact-title h2{
    font-size: 20px;
}
.form-content{
    width: 42%;
    margin: 0 auto;
}
.form-box{
    padding: 2% 0;
    border-top: 1px solid #ddd;
    width: 80%;
    margin: 0 auto;
    align-items: center;
}
.form-box label{
    margin: 0 3.3%;
    width: 100%;
    max-width: 240px;
    letter-spacing: 0.05em;
    font-size: 16px;
}
.form-box:th-child(5){
    border-bottom: 1px solid #ddd;
}
.must{
    color: red;
}
.error{
    color:red;
    font-size: 13px;
    font-weight: bold;
}
.form-column{
    border: 1px solid #ddd;
    border-radius: 4px;
    margin: 0 0 0 3%;
    padding: 0 1%;
    height: 30px;
    flex: 1;
    width: 88%;
    font-size: 16px;
}
.form-textarea{
    border: 1px solid #ddd;
    border-radius: 4px;
    margin: 0 0 0 3%;
    padding: 0 1%;
    height: 160px;
    flex: 1;
    width: 88%;
    font-size: 16px;
    transition: .5s;
}
.form-button-box{
    text-align: center;
    margin: 3% 0;
}
.form-button{
    font-size: 16px;
    color: white;
    background: black;
    border: 1px solid black;
    text-decoration: none;
    border-radius: 7px;
    padding: 1.7% 8%;
    transition: 0.3s;
}
.form-button:hover{
    color: black;
    background-color: white;
}
.form-completed{
    width: 37%;
    margin: 2% auto 6% auto;
}
.back-button{
    width: 100%;
    text-align: center;
}
.back-button a{
    color: #fafafa;
    background: black;
    border: 1px solid black;
    text-decoration: none;
    letter-spacing: 0.2em;
    border-radius: 7px;
    padding: 0.7% 1.4%;
    transition: 0.3s;
}
.back-button a:hover{
    color: black;
    background-color: #fafafa;
}

@media screen and (min-width: 768px) and (max-width: 1068px){
    .form-content{
        width: 76%;
    }
    .form-completed{
        width: 60%;
    }
    .form-completed p{
        margin: 0.8% 0
    }
}


@media screen and (max-width: 767px){
    .contact-title h2{
        font-size: 18px;
    }
    .form-content{
        width: 90%;
    }
    .form-box{
        width: 100%;
        padding: 5% 0;
    }
    .form-box label{
        font-size: 14px;
    }
    .form-completed{
        width: 90%;
        margin: 5%;
    }
    .form-completed p{
        margin: 1% 0;
        font-size: 14px;
    }
    .form-textarea{
        height: 100px;
    }
    .back-button{
        margin: 15% 0 0 0;
    }
    .back-button a{
        padding: 1% 4%;
        font-size: 14px;
        letter-spacing: 0.15em;
    }
}