*{
    box-sizing: border-box;
}

.primjer{
     background-color: orangered;
    width: 300px;
    height: 150px;
    padding: 5px;
    border: 5px solid;
    margin: 15px;
    border-radius: 10px;
    border-top: 10px Yellow dotted;
    overflow: auto;
}

body{
    background-color: antiquewhite;
    width: 1000px;
}

.primjer2{
     background-color: orangered;
    width: 300px;
    height: 150px;
    padding: 5px;
    border: 5px solid;
    margin: 15px;
    border-radius: 10px;
    border-top: 10px Yellow dotted;
    overflow: hidden;
}

.primjer3{
     background-color: orangered;
    width: 300px;
    height: 150px;
    padding: 5px;
    border: 5px solid;
    margin: 15px;
    border-radius: 10px;
    border-top: 10px Yellow dotted;
    overflow: scroll;
}

h1{
    background-color: tomato;
}

.da{
     background-color: orangered;
    width: 300px;
    height: 150px;
    padding: 5px;
    border: 5px solid;
    margin: 15px;
    border-radius: 10px;
    border-top: 10px Yellow dotted;
}