Loading Spinners with CSS

Spinners are the small element that indicates the loading state of web page components. Mostly, the loader GIF icon is used as a spinner in loading animation. If you want a simple solution for the spinner animation, CSS can be used to create snipper icons without JavaScript/jQuery.

The pure CSS spinner helps to reduce page load time and add user-friendly loading animation to the web page. In this example code snippet, we will create spinners with HTML and CSS.

HTML Code:

<div class="spinner" role="status">
    <span class="sr-only">Loading...</span>
</div>

CSS Code:

@keyframes spinner-border {
    to { transform: rotate(360deg); }
}
.spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: -0.125em;
    color: #007bff;
    border: 0.25em solid currentcolor;
    border-right-color: transparent;
    border-radius: 50%;
    -webkit-animation: .75s linear infinite spinner-border;
    animation: .75s linear infinite spinner-border;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

Add Spinner to Button

The following code snippet is used to add a loading spinner in the HTML button using CSS.

HTML Code:

<button class="btn btn-primary" type="button" disabled>
    <span class="spinner" role="status" aria-hidden="true"></span>
    Loading...
</button>

CSS Code:

@keyframes spinner-border {
    to { transform: rotate(360deg); }
}
.spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: -0.125em;
    color: #007bff;
    border: 0.25em solid currentcolor;
    border-right-color: transparent;
    border-radius: 50%;
    -webkit-animation: .75s linear infinite spinner-border;
    animation: .75s linear infinite spinner-border;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.btn {
    display: inline-block;
    font-weight: 400;
    color: #212529;
    text-align: center;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
}
.btn-primary {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}
.btn:disabled {
    opacity: .65;
}
.btn .spinner {
    color: #fff;
    width: 1rem;
    height: 1rem;
    vertical-align: middle;
}