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css3 實(shí)現(xiàn)文字閃爍效果的三種方式示例代碼

1.通過改變透明度來(lái)實(shí)現(xiàn)文字的漸變閃爍，效果圖：

<!DOCTYPE html>
<html>
<head>
</head>
<title>文字閃爍</title>
<body>
<div class="blink">
星星之火可以燎原
</div>
</body>
<style>
.myclass{
    	letter-spacing:5px;/*字間距*/
    	color: red;
    	font-weight:bold;
    	font-size:46px;
    }
	
/* 定義keyframe動(dòng)畫，命名為blink */
@keyframes blink{
  0%{opacity: 1;}
     
  100%{opacity: 0;} 
}
/* 添加兼容性前綴 */
@-webkit-keyframes blink {
    0% { opacity: 1; }
    100% { opacity: 0; }
}
@-moz-keyframes blink {
    0% { opacity: 1; }
    100% { opacity: 0; }
}
@-ms-keyframes blink {
    0% {opacity: 1; } 
    100% { opacity: 0;}
}
@-o-keyframes blink {
    0% { opacity: 1; }
    100% { opacity: 0; }
}
/* 定義blink類*/
.blink{
	color: red;
	font-size:46px;
    animation: blink 1s linear infinite;  
    /* 其它瀏覽器兼容性前綴 */
    -webkit-animation: blink 1s linear infinite;
    -moz-animation: blink 1s linear infinite;
    -ms-animation: blink 1s linear infinite;
    -o-animation: blink 1s linear infinite;
}
<style>
</html>

如果不需要漸變閃爍效果，我們可以在keyframe動(dòng)畫中定義50%，50.1%的opacity的值。如下：

    @-webkit-keyframes blink {
        0% { opacity: 1; }
        50% { opacity: 1; }
        50.01% { opacity: 0; }
        100% { opacity: 0; }
    }

2.利用背景圖片或者背景漸變，實(shí)現(xiàn)文字顏色的閃爍效果，效果圖：

<!DOCTYPE html>  
<html>  
    <head>  
        <meta charset="UTF-8">  
        <title></title>  
        <style type="text/css">  
        .blink{ 
    	display: inline-block;
    	font-size: 46px;
    	margin: 10px;
    	background: linear-gradient(left, #f71605, #e0f513); 
        background: -webkit-linear-gradient(left, #f71605, #e0f513);
        background: -o-linear-gradient(right, #f71605, #e0f513);
		-webkit-background-clip: text;
		-webkit-text-fill-color: transparent;
		animation:scratchy 0.253s linear forwards infinite;
		/* 其它瀏覽器兼容性前綴 */
	    -webkit-animation:scratchy 0.253s linear forwards infinite;
	    -moz-animation: scratchy 0.253s linear forwards infinite;
	    -ms-animation: scratchy 0.253s linear forwards infinite;
	    -o-animation: scratchy 0.253s linear forwards infinite;
    }  
   @keyframes  scratchy {
		0% {
			background-position: 0 0;
		}
		25% {
			background-position: 0 0;
		}
		26% {
			background-position: 20px -20px;
		}
		50% {
			background-position: 20px -20px;
		}
		51% {
			background-position: 40px -40px;
		}
		75% {
			background-position: 40px -40px;
		}
		76% {
			background-position: 60px -60px;
		}
		99% {
			background-position: 60px -60px;
		}
		100% {
			background-position: 0 0;
		}
	}
	/* 添加兼容性前綴 */
	@-webkit-keyframes scratchy {
	    0% {
			background-position: 0 0;
		}
		25% {
			background-position: 0 0;
		}
		26% {
			background-position: 20px -20px;
		}
		50% {
			background-position: 20px -20px;
		}
		51% {
			background-position: 40px -40px;
		}
		75% {
			background-position: 40px -40px;
		}
		76% {
			background-position: 60px -60px;
		}
		99% {
			background-position: 60px -60px;
		}
		100% {
			background-position: 0 0;
		}
	}
	@-moz-keyframes scratchy {
	    0% {
			background-position: 0 0;
		}
		25% {
			background-position: 0 0;
		}
		26% {
			background-position: 20px -20px;
		}
		50% {
			background-position: 20px -20px;
		}
		51% {
			background-position: 40px -40px;
		}
		75% {
			background-position: 40px -40px;
		}
		76% {
			background-position: 60px -60px;
		}
		99% {
			background-position: 60px -60px;
		}
		100% {
			background-position: 0 0;
		}
	}
	@-ms-keyframes scratchy {
	   0% {
			background-position: 0 0;
		}
		25% {
			background-position: 0 0;
		}
		26% {
			background-position: 20px -20px;
		}
		50% {
			background-position: 20px -20px;
		}
		51% {
			background-position: 40px -40px;
		}
		75% {
			background-position: 40px -40px;
		}
		76% {
			background-position: 60px -60px;
		}
		99% {
			background-position: 60px -60px;
		}
		100% {
			background-position: 0 0;
		}
	}
	@-o-keyframes scratchy {
	   0% {
			background-position: 0 0;
		}
		25% {
			background-position: 0 0;
		}
		26% {
			background-position: 20px -20px;
		}
		50% {
			background-position: 20px -20px;
		}
		51% {
			background-position: 40px -40px;
		}
		75% {
			background-position: 40px -40px;
		}
		76% {
			background-position: 60px -60px;
		}
		99% {
			background-position: 60px -60px;
		}
		100% {
			background-position: 0 0;
		}
	}
    </style>  
    </head>  
    <body>  
        <div class="blink">星星之火可以燎原</div>
    </body>  
</html>

3.通過設(shè)置text-shadow的值，來(lái)實(shí)現(xiàn)文字陰影閃爍的效果，效果圖：

<!DOCTYPE html>  
<html>  
    <head>  
        <meta charset="UTF-8">  
        <title></title>  
        <style type="text/css">  
        .blink{ 
    	font-size: 46px; 
    	color:#4cc134; 
    	margin: 10px;
    	animation: changeshadow 1s  ease-in  infinite ;
    	/* 其它瀏覽器兼容性前綴 */
	    -webkit-animation: changeshadow 1s linear infinite;
	    -moz-animation: changeshadow 1s linear infinite;
	    -ms-animation: changeshadow 1s linear infinite;
	    -o-animation: changeshadow 1s linear infinite;
    }  
    @keyframes changeshadow {  
        0%{ text-shadow: 0 0 4px #4cc134}  
        50%{ text-shadow: 0 0 40px #4cc134}  
        100%{ text-shadow: 0 0 4px #4cc134}  
    }
    /* 添加兼容性前綴 */
	@-webkit-keyframes changeshadow {
	  0%{ text-shadow: 0 0 4px #4cc134}  
          50%{ text-shadow: 0 0 40px #4cc134}  
          100%{ text-shadow: 0 0 4px #4cc134}  
	}
	@-moz-keyframes changeshadow {
	    0%{ text-shadow: 0 0 4px #4cc134}  
            50%{ text-shadow: 0 0 40px #4cc134}  
            100%{ text-shadow: 0 0 4px #4cc134}  
	}
	@-ms-keyframes changeshadow {
	    0%{ text-shadow: 0 0 4px #4cc134}  
            50%{ text-shadow: 0 0 40px #4cc134}  
            100%{ text-shadow: 0 0 4px #4cc134}  
	}
	@-o-keyframes changeshadow {
	    0%{ text-shadow: 0 0 4px #4cc134}  
            50%{ text-shadow: 0 0 40px #4cc134}  
            100%{ text-shadow: 0 0 4px #4cc134}  
	}
    </style>  
    </head>  
    <body>  
        <div class="blink">星星之火可以燎原</div>
    </body>  
</html>

感謝博客：https://blog.csdn.net/art_people/article/details/104768666/

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