*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: white;
}
html , body{
    height: 100%;
    width: 100%;
}
body{
    background-image: url(a.jpg);
    background-repeat: no-repeat;
    background-size: cover;
}

ul{
    text-align: right;
}

li{
    display: inline-block;
    padding: 20px;
    font-size: 16px;
    text-transform: uppercase;
    text-align: left;
}

.container{
    width: 100%;
    text-align: center;
    margin-top: 180px;
}

h1{
    margin-bottom: 50px;
    font-size: 50px;
}

p{
    margin-bottom: 20px;
}

button{
    border: 4px solid  skyblue;
    color: rgb(255, 255, 255);
    margin: 20px;width: 280px;
height: 40px;
font-size: 20px;
border-radius: 20px;
cursor: pointer ;
background: transparent;
}