'Why doesn't Bootstrap work when I have CSS on?

Hey I am new to Web Design and I am making my project for school class. My bootstrap won't seem to work when I have CSS on, but when I comment out my css bootstrap seems to work. I tried it with divs of class "blokkviz". Here is my HTML:

<!DOCTYPE html>
<html lang="en">
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"
    integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href="style.css?v=1.0" rel="stylesheet" type="text/css" />
</head>

<body class="telo" id="body1">
    <div class="container-fluid" id="prvi">
        <img src="kviz.jpg" id="logo">
        Sajt namenjen za kviz
    </div>

    <div class="grupa">
        <h1 class="naslovGrupe">C#</h1>
        <div class="blokkviz" class="col-md-6"class="col-lg-6">
            <h2 style="font-weight: bold">Pocetnicki kviz</h2>
            <h6 style="margin-left: 10px; margin-top: 15px;">Kviz namenjen pocetnicima ili osobama koje zele da obnove pocetno znanje C#</h6>
            <div style="margin-left:13px; margin-top:80px"> Trajanje 5-10 min</div>
            <button id="prvikviz" class="zapocni">Zapocni</button>
        </div>

        <div class="blokkviz" class="col-md-6"class="col-lg-6">
            <h2 style="font-weight: bold">Pocetnicki kviz</h2>
            <h6 style="margin-left: 10px; margin-top: 15px;">Kviz namenjen pocetnicima ili osobama koje zele da obnove pocetno znanje C#</h6>
            <div style="margin-left:13px; margin-top:80px"> Trajanje 5-10 min</div>
            <button id="prvikviz" class="zapocni">Zapocni</button>
        </div>
        
    </div>




    <script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js"
        integrity="sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB"
        crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js"
        integrity="sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13"
        crossorigin="anonymous"></script>
    <script src="script.js"></script>
</body>

</html>

And here is the css:

#prvi{
    background-color: rgb(250, 221, 26);
    height: 90px;
    text-align: center;
    font-weight: bolder;
    font-size: 30px;
    padding-top: 15px;
    color:white;
    text-shadow: 2px 2px #000000;
}

.telo{
    background-color: lightblue;
}

#logo{ 
    position:absolute; 
    top:0; 
    left:0; 
    height:80px 
}

.blokkviz{
    float:left;
    width: 300px;
    height: 300px;
    display: block;
    border: 2px solid black;
    padding: 5px 10px;
    margin-top: 30px;
    margin-left: 30px;
    margin-right: 100px;
    background-color: rgb(226, 224, 224);
}

h2{
    text-align: center;
}

h1{
    margin: 15px;
    margin-top: 60px;
}

.grupa{
    height: 500px;
    border: 3px solid black;
}

#prvikviz{
    position:absolute;
    left: 250px;
    top: 460px;   
}
.zapocni{
    background-color: rgb(24, 141, 219);
    color:white;
    font-weight: bold;
}

.pitanja{
    margin-left: 300px;
    line-height: 27px;
    margin-top: 50px;
    margin-right: 150px;
}

.povratakNaPocetak{
    position: relative;
    left: 5px;
    top: 5px;
    border: 2px solid gray;
}
input[type="radio"]{
    margin: 10px;
}
.predaj{
    margin-bottom: 110px;
    margin-top: 30px;
    margin-left: 12px;
    font-size: 20px;
    font-weight: bold;
    background-color: rgb(24, 141, 219);
    color:white;
    border: 3px solid rgb(24, 141, 219);
}

.naslovGrupe{
    margin: 15px;
}

Note: There might be some stuff that isn't used anywhere else. That's because of my JavaScript file and another html file but it seems like the problem is in css so i only added these 2.

htmlcssbootstrap-4


Solution 1:[1]

I think it's not working due to the way you have structred the class

class="blokkviz" class="col-md-6" class="col-lg-6"

It's going to work better if you organise like below, you only need 1 class with all the variables listed in it.

class="col-md-6 col-lg-6 blokkviz"

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Cutey from Cute Code

Related Questions