, поскольку я предполагаю, что вы не станете больше, чем 2 числа, а также до или после полудня, вы можете дать им всем фиксированную ширину, например width: 80px;
, и, если необходимо для адаптивного дизайна, добавьте правило только для мультимедиа, чтобы уменьшить количество пикселей в зависимости от размера экрана.
.input-group-text{
width:80px;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" />
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css"
integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous" />
<link href="https://fonts.googleapis.com/css?family=Open+Sans&display=swap" rel="stylesheet" />
<link rel="stylesheet" href="style.css" />
<title>Work Day Scheduler</title>
</head>
<body>
<header class="jumbotron">
<h1 class="display-3">Work Day Scheduler</h1>
<p class="lead">A simple calendar app for scheduling your work day</p>
<p id="currentDay" class="lead"></p>
</header>
<div class="container">
<!-- Timeblocks go here -->
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">9 AM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">10 AM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">11 AM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">12 AM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">1 PM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">2 PM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">3 PM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">4 PM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
<div class="input-group input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroup-sizing-lg">5 PM</span>
</div>
<input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
<div class="input-group-append">
<button class="btn btn-outline-secondary saveBtn" type="button">Button</button>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
</body>
</html>