Contato2.css

body{
    margin: 0;
}
.back{
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100vw;
    height: 70vh;
    background: linear-gradient( rgba(255,255,255,.3),rgba(255,255,255,.3)),url("contato.jpg");
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;

}
.text{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
    font-family: 'Source Sans Pro', sans-serif;
    font-weight: 600;
    color: #000000;
    text-align: center;
    font-size: 31px;
}
.container{
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    margin-top: 90px;
    width: 60%;
}
.form1{
    display: flex;
    flex-direction: column;
    margin-right: 25px;
    width: 50%;
}
.form2{
    display: flex;
    flex-direction: column;
    width: 50%;
}

.user{
    display: flex;
    flex-direction: column;
    margin-bottom: 18px;
    width: 100%;
    height: 28px;
    border-radius: 4px;
    color: #000000;
    font-family: 'Source Sans Pro', sans-serif;
    text-indent: 10px;
    border: none;
    box-shadow: 1px 1px 1px 1px #cdcdb1;

}
.user2{
    display: flex;
    flex-direction: column;
    margin-bottom: 18px;
    width: 100%;
    height: 28px;
    border-radius: 4px;
    color: #000000;
    font-family: 'Source Sans Pro', sans-serif;
    text-indent: 10px;
    border: none;
    box-shadow: 1px 1px 1px 1px #cdcdb1;
}
.user3{
    display: flex;
    flex-direction: column;
    margin-bottom: 18px;
    width: 100%;
    height: 116px;
    border-radius: 4px;
    color: #000000;
    font-family: 'Source Sans Pro', sans-serif;
    text-indent: 10px;
    border: none;
    box-shadow: 1px 1px 1px 1px #cdcdb1;
    resize: none;
}
::-webkit-input-placeholder{
    font-family: 'Source Sans Pro', sans-serif;
    font-weight: 400;
    color: #646464;
    text-indent: 10px;
    font-size: 90%;
}
.user3::-webkit-input-placeholder{
    font-family: 'Source Sans Pro', sans-serif;
    font-weight: 400;
    color: #646464;
    text-indent: 10px;
    text-align: start;
}
.button_submit{
    display: flex;
    justify-content: flex-end;
    width: 60%;
    margin-top: 20px;
    margin-bottom: 25px;
}
.botao{
    background-color:rgba(8,162,132,1.8);
    border: none;
    color: #ffffff;
    font-family: 'Source Sans Pro', sans-serif;
    font-weight: 600;
    width: 93px;
    height: 30px;
    border-radius: 4px;
    float: right;
}
textarea{
    padding: 10px 0 0 0;
    outline: none;
}
input{
    outline: none;
}
form{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

@media(orientation:portrait){
    .back{
        height: 80vh;
    }
    .container{
        flex-direction: column;
        width: 66%;
        margin-top: 43px;
    }
    .form1{
        display: flex;
        flex-direction: column;
        margin-left: 25px;
        width: 100%;
    }
    .form2{
        display: flex;
        flex-direction: column;
        width: 100%;
    }
    .user{
        margin-bottom: 8px;
        height: 81px;
    }
    .user2{
        margin-bottom: 9px;
        height: 81px;
    }
    .user3{
        height: 126px;
    }
    .button_submit{
        display: flex;
        justify-content: center;
        width: 66%;
        margin-bottom: 32px;
    }
}