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MDC-Web Select Component

I am trying to add MDC Web Components to my website using unpkg and while implementing I ran into a problem where I am using two select elements side by side.The problem is while selecting a option from the first select element the element is moving slightly downwards and while selecting option from the second select element the first element is moved to it previous position.I am unable to understand why it is happening.In my HTML i just included the css and js files of the material web components.

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <link rel="stylesheet" href="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.css">
    <style type="text/css">
        .select-position {
            min-width: 175px;
            left: 25%;
            margin:5px;
        }
    </style>
</head>
<body>
    <div class="mdc-select select-position mdc-select--outlined" data-mdc-auto-init="MDCSelect">
        <select class="mdc-select__native-control">
            <option></option>
            <option>First Year</option>
            <option>Second Year</option>
        </select>
        <label class="mdc-floating-label">Select Year</label>
        <div class="mdc-notched-outline">
            <svg>
                <path class="mdc-notched-outline__path"></path>
            </svg>
        </div>
        <div class="mdc-notched-outline__idle"></div>
    </div>
    <div class="mdc-select select-position mdc-select--outlined" data-mdc-auto-init="MDCSelect">
        <select class="mdc-select__native-control">
            <option></option>
            <option>CSE</option>
            <option>ECE</option>
        </select>
        <label class="mdc-floating-label">Select Branch</label>
        <div class="mdc-notched-outline">
            <svg>
                <path class="mdc-notched-outline__path"></path>
            </svg>
        </div>
        <div class="mdc-notched-outline__idle"></div>
    </div>
    <script src="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.js"></script>
    <script>mdc.autoInit()</script>
</body>
</html>

Solution

  • I did some investigation with another person on the team here. Attached is a codepen of what fixes it.

    1. I think this issue only happens on Chrome. Check Firefox - it didn't happen to me
    2. The heights of the select are changing when a select is with/without a value (in Chrome).
    3. To overcome this issue, we wrapped each select with a div, and made the parent of the 2 elements display: flex.

    https://codepen.io/moog16/pen/GBeLxE.

    <div style="display: flex">
  <div>
   <SelectElement ... >
  </div>
  <div>
   <SelectElement ... >
  </div>
</div>