HTML stands for HyperText Markup Language. It is the standard markup language used for creating and structuring content on the internet. HTML is the backbone of webpages, defining the structure and layout of a document by using..

!DOCTYPE htmlhtmlhead meta charset="utf-8" title/title style input::-webkit-input-placeholder { /* placeholder颜色 */ color: #aab2bd; /* placeholder字体大小 */ font-size: 12px; ..