.left {
    float: left;
    margin-right: .5em;
}

To add CSS:

• If you are using WordPress 4.7 or later, use the “Additional CSS” option in the customizer.
• If your theme has a custom CSS option, use that to add the CSS shown above.
• If not, install the plugin Simple Custom CSS.

Learn to use the Chrome Developer Tools to help you see and test changes to your CSS.

.left {
    float: left;
    margin-right: .5em;
}

Edit the page/post and click on the image. Then, click on the left align button. Update the page/post.

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