body {
    margin: 0;
    padding: 0;
    background-color: #1a3b3b;
    font-family: Arial, Helvetica, sans-serif;
}

#loading {
    position: fixed;
    width: 100%;
    height: 100vh;
    background: #1a3b3b;
    z-index: 99999;
    text-align: center;
}

#loading img {
    position: relative;
    width: 300px;
    height: 300px;
    margin-top: 230px;
}

nav {
    width: 100%;
    line-height: 80px;
}

.open-menu ul {
    float: right;
    margin-top: -70px;
}

.open-menu ul li {
    display: inline-block;
    line-height: 30px;
    margin-right: 40px;
    padding: 10px;
}

.open-menu ul li a {
    text-decoration: none;
    color: #FFF;
    opacity: .8;
}

.logo {
    width: 260px;
    height: 80px;
    margin-top: 10px;
}

.logo img {
    width: 100%;
    height: 100%;
}

nav ul li a:hover,
nav ul li a:active,
nav ul li a:focus {
    color: #07f7f0;
    text-decoration: none;
}

.active a {
    color: #07f7f0!important;
}

label div {
    width: 30px;
    height: 5px;
    background-color: white;
    margin-top: 5px;
}

label {
    position: relative;
    float: right;
    margin-top: 30px;
    margin-right: 20px;
    display: none;
}

<!----------------------------------------nav-------------------->.text-1 {
    position: relative;
    float: left;
    padding: 20px 20px 20px px;
}

.text-1 h1 {
    float: left;
    margin-top: 75px;
    color: #fff;
    font-size: 50px;
    font-weight: bold;
    margin-bottom: 15px;
}

.text-1 p {
    color: #fff;
    opacity: .8;
}

.img-1 {
    position: relative;
    float: left;
    margin-left: 50px;
    width: 430px;
    height: 350px;
}

.img-1 img {
    width: 100%;
    height: 100%;
}

.form-1 {
    position: relative;
    margin-top: 100px;
    margin-left: 150px;
    width: 280px;
    height: 290px;
    background-color: #052322;
}

.form-1 form {
    padding: 20px;
    color: #fff;
    margin-top: 5px;
}

.form-1 form input {
    padding: 5px;
    padding-right: 40px;
    color: #fff;
    opacity: .8;
    background-color: #1a3b3b;
    border: none;
    margin-top: 5px;
    margin-bottom: 18px;
}

.form-1 button {
    position: relative;
    padding: 10px 60px;
    border: none;
    border-radius: 30px;
    background-color: #5659e1;
    color: #fff;
    margin-left: 40px;
    margin-top: 10px;
}

.btn-1 {}

.form-1 button:focus {
    border: none;
}

.e-msg {
    position: relative;
    width: 280px;
    height: 10px;
    margin-top: 10px;
    margin-left: 150px;
}

.e-msg p {
    color: white;
    text-align: center;
}

<!-------------------------------------------------footer------------>footer {
    width: 100%;
    height: 40px;
    position: absolute;
    bottom: 0;
    margin-bottom: -50px;
}

footer h3 {
    text-align: center !important;
    font-size: 13px;
    padding-top: 20px;
    opacity: .8;
    color: #fff;
    background-color: transparent;
}

<!-------------------------------------------------------responceve---------------------------->