CSS 데모: -webkit-text-stroke-color 데모 버튼을 클릭해 보세요!
selector {
    -webkit-text-stroke-color: /* value */
}
-webkit-text-stroke-color: red;
-webkit-text-stroke-color: #00a0e9;
-webkit-text-stroke-color: currentcolor;
-webkit-text-stroke-color: rgba(0, 0, 0, 0.4);

/* 글로벌 값 */
-webkit-text-stroke-color: inherit;
-webkit-text-stroke-color: initial;
-webkit-text-stroke-color: revert;
-webkit-text-stroke-color: revert-layer;
-webkit-text-stroke-color: unset;
<style>
    .text {
        font-size: 70px;
        font-weight: 900;
        color: white;
        -webkit-text-stroke-width: 1px;
        -webkit-text-stroke-color: red;
    }
</style>
<p class="text">텍스트</p>
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