@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@300;400;700&display=swap');
body{
    font-family: 'Raleway', sans-serif;
}
*{
    margin: 0;
    padding: 0;
}
:root{
    --background: linear-gradient(135deg,#667eea7e 0%,#764ba298 100%);
    --color-primary:#667eea;
    --color-secondary:#764ba2;
}
header nav{
    width: 100%;
    max-width: 2000px;
    margin: 0px ;
   
}
.menu_bar{
    display: none;
}
header nav ul{
    overflow: hidden;
    list-style: none;
    position: fixed;
    background: var(--background);
    width: 100%;
    max-width: 2000px;
    margin: 0px ;
    z-index: 2;
    
}
header nav ul li{
    
    float: right;
   
}
header nav ul li a{
    color: #fff;
    padding: 20px;
    display: block;
    text-decoration: none;
    text-align: center;
    font-size: 20px;
}
header nav ul li span{
    margin-right:20px ;
}
header nav ul li a:hover{
    background: #037E8C;
}
@media screen and (max-width:800px) {
    header nav {
        width: 80%;
        height: 100%;
        left: -100%;
        margin: 0;
        position: fixed;
        top: 69px;
        z-index: 3;
    }
    header nav ul li{
        display: block;
        float: none;
        border-bottom: 1px solid rgba(255,255,255, 0.3);
        
    }
    .menu_bar{
        display: block;
        width: 100%;
        background: #ccc;
        position: fixed;
        z-index: 3;
    }
    .menu_bar .bt-menu{
        display: block;
        padding: 20px;
        background: var(--color-primary);
        color: #fff;
        text-decoration: none;
        font-weight: bold;
        font-size: 25px;
        -webkit-box-sizing:border-box;
        -moz-box-sizing:border-box;
        box-sizing: border-box;
    }
    .menu_bar span{
        float:right ;
        font-size: 30px;
    }
}
form{
    padding: 50px 20px;
    background-color: #ededed;
    margin: calc(25%+100px);
    margin-top: 70px;
    padding-top: 28px;
    position: absolute;
    
}
h1{
    text-align: center;
    padding: 12px;
}
input{
    text-align: center;
    width: calc(100%-20px);
    padding: 9px;
    margin: auto;
    margin-top: 12px;
    font-size: 16px;
}
input[type='submit']{
    background-color: var(--color-primary);
    color: #fff;
    width: 200px;
    margin: 0 10%;
    margin-top: 22px;
    border: none;
    
}