style.css

body{
    background-color: rgba(164, 166, 167, 0.247);
    color:white;
    font-family: "Arial";
    background-image: url(tlo.png);
    background-size:100% auto ;
    }    
p.onas{
    text-align: justify;
    font-size: x-large;
    margin: 2cm;        
    }
            
.naglowek{
    height:150px;
    width:100%;
    margin-bottom: 1cm;
    background-color:rgba(248, 149, 0, 0.658);
    box-shadow: 0 0 10px rgb(248, 149, 0);
    border-radius: 0px 50px ;
    }
.main{
    position: relative;
    left: 19%;
    width:70%;
    height: 70%;
    margin-left:8%;
    border-radius: 0px 50px ;
    background-color:rgba(248, 149, 0, 0.397);
    box-shadow: 0 0 10px rgba(248, 149, 0, 0.452);
    }
.lewy{
               
    width:20%;
    height:auto;
    border-radius: 0px 50px;
    background-color:rgba(248, 149, 0, 0.658);
    box-shadow: 0 0 10px rgb(248, 149, 0);
    float:left;
    line-height: 1cm;
    position: -webkit-sticky;
    position: sticky;
    top: 10px;
    }
.przycisk{
    width: 250px;
    color: white;
    font-size:1cm;
    height:100px;
    margin-left: 15px;
    border: solid 0px rgb(255, 255, 255) ;
    text-decoration: none;
    transition: border-width 0.3s;
    }
    .przycisk:hover { border-width: 8px;}