I've been working on coding for a website and struggling to vertically center text. I've researched various solutions on StackOverflow and other platforms, like using the display:table and display:table-cell methods, along with the top:50%, transformY approach. However, I'm encountering issues in implementing these methods successfully. Below is the code I'm using in an attempt to vertically center the text. I've followed the top:50%, transformY method for this purpose. Any guidance on what I might be doing wrong would be greatly appreciated.
HTML:
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="stylesheet.css">
<title>Game Timer and Scorekeeper</title>
</head>
<body>
<div class="container-fluid">
<div class="row" id="heading">
<div class="col-xs-12">
<div class="positioner">
<h1>Game Timer and Scorekeeper</h1>
</div>
</div>
</div>
<div class="row" id="top-labels">
<div class="col-xs-3 labels teamlabel" id="a-label">
<div class="positioner">
<h2>Team A</h2>
</div>
</div>
<div class="col-xs-6 labels" id="gameclock-label">
<div class="positioner">
<h2>Game Clock</h2>
</div>
</div>
<div class="col-xs-3 labels teamlabel" id="b-label">
<div class="positioner">
<h2>Team B</h2>
</div>
</div>
</div>
<div class="row" id="thirdrow">
<div class="col-xs-3 pointsclock teampoints" id="pointsA">
<div class="positioner">
<h1>POINTS A</h1>
</div>
</div>
<div class="col-xs-6 pointsclock" id="gameclock">
<div class="positioner">
<h1>GAME CLOCK</h1>
</div>
</div>
<div class="col-xs-3 pointsclock teampoints" id="pointsB">
<div class="positioner">
<h1>POINTS B</h1>
</div>
</div>
</div>
<div class="row" id="fourthrow">
<div class="col-xs-3 ptcontclock ptcontrol" id="ptcontrolA">
<div class="positioner">
<h2>CONTROL A</h2>
</div>
</div>
<div class="col-xs-6 ptcontclock" id="questionclock">
<div class="positioner">
<h2>QUESTION CLOCK</h2>
</div>
</div>
<div class="col-xs-3 ptcontclock ptcontrol" id="ptcontrolB">
<div class="positioner">
<h2>CONTROL B</h2>
</div>
</div>
</div>
</div>
</body>
</html>
CSS:
.container-fluid {
width: 100vw;
height: 100vh;
}
#heading {
height: 15vh;
border: 2px solid;
}
#top-labels {
height: 10vh;
border: 2px solid;
width: 100vw;
}
#top-labels .labels {
border-right: 2px solid;
border-left: 2px solid;
}
#thirdrow {
height: 40vh;
border: 2px solid;
width: 100vw;
}
#thirdrow .pointsclock {
height: 40vh;
border-right: 2px solid;
border-left: 2px solid;
}
#fourthrow {
height: 35vh;
width: 100vw;
}
#fourthrow .ptcontclock {
border-right: 2px solid;
border-left: 2px solid;
height: 35vh;
}
.positioner{
height:100%;
width:100%;
position: relative;
top: 50%;
transform: translateY(-50%);
}