CSS outline

outline:4px solid red;

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline:4px solid;

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline:32px solid;

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline:4px dashed green;

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline:8px solid rgb(255,0,0);

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline:8px solid red; border-radius:20px;

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline:8px solid rgba(255,0,0,0.5);

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

outline-width:8px; outline-style:solid; outline-color:red;

Lorem ipsum dolor sit amet consectetur adipisicing elit. Soluta, praesentium.

https://developer.mozilla.org/en-US/docs/Web/CSS/outline

caniemail.com, 2022.