@import url(http://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;
}
.tooltip {
    position: relative;
    display: inline-block;
    border-bottom: 1px dotted black;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: black;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px 0;

    /* Position the tooltip */
    position: absolute;
    z-index: 1;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
}

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:70%;
margin:4% 15%;
}
header{
background-color: #4180C5;
text-align: center;
padding-top: 12px;
padding-bottom: 8px;
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=url]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
input[type=file]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
input[type=password]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
input[type=date]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
input[type=email]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
input[type=email]{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}

input[type=Number]{
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: #4180C5;
color: aliceblue;
font-size:15px;
cursor:pointer;
}
#submit:hover
{
background-color: black;
}
input[type=reset]
{
margin-bottom: 20px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
background-color: #4180C5;
color: aliceblue;
font-size:15px;
cursor:pointer;
}
#reset:hover
{
background-color: black;
}
select{
margin-bottom: 20px;
margin-top: 10px;
width:100%;
padding: 15px;
border-radius:5px;
border:1px solid #7ac9b7;
}
textarea{
width:100%;
padding: 15px;
margin-top: 10px;
border:1px solid #7ac9b7;
border-radius:5px;
margin-bottom: 20px;
resize:none;
}
input[type=text]:focus,input[type=url]:focus,input[type=file]:focus,input[type=password]:focus,input[type=date]:focus,input[type=email]:focus,input[type=Number]:focus,,textarea:focus,select:focus {
border-color: #4697e4;
}