@import url(https://fonts.googleapis.com/css?family=Roboto+Slab);
* {
/* With these codes padding and border does not increase it's width and gives intuitive style.*/

-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
body {
margin:0;
padding:0;
font-family: 'Roboto Slab', serif;
}
div#envelope{
width: 55%;
margin: 10px 30% 10px 25%;
padding:10px 0;
border: 2px solid gray;
border-radius:10px;
}
form{
width:100%;
margin:4% 1%;
}
header {
    background-color: #288A8A;
    text-align: center;
    /*padding-top: 12px;
padding-bottom: 8px;*/
    padding: 18px;
    margin-top: -11px;
    margin-bottom: 8px;
    border-radius: 10px 10px 0 0;
    color: aliceblue;
}

/* Makes responsive fields. Sets size and field alignment.*/
input[type=text]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
input[type=submit] {
    margin-bottom: 20px;
    width: 100%;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #7ac9b7;
    background-color: #288A8A;
    color: aliceblue;
    font-size: 15px;
    cursor: pointer;
}
#submit:hover
{
background-color: black;
}
textarea{
width:100%;
/*padding: 15px;*/
margin-top: 10px;
border:1px solid #7ac9b7;
border-radius:5px;
margin-bottom: 20px;
resize:none;
}
input[type=text]:focus,textarea:focus {
border-color: #4697e4;
}
input[type=password] {
    -webkit-text-security: disc !important;
    margin-bottom: 20px;
    margin-top: 10px;
    width: 100%;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #7ac9b7;
}

input[type=button] {
    margin-bottom: 20px;
    width: 100%;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #7ac9b7;
    background-color: #288A8A;
    color: aliceblue;
    font-size: 15px;
    cursor: pointer;
}