html - 如何在屏幕中间设置我的网站加载器

Question

我使用我网站的加载程序，但它位于页面顶部的位置如何在 css 中实现以对齐 sereen 的中心。请检查我的加载程序示例 Demo

**

	#fountainTextG{
	width:360px;
	margin:auto;
}

.fountainTextG{
	color:rgb(242,155,97);
	font-family:Arial;
	font-size:38px;
	text-decoration:none;
	font-weight:normal;
	font-style:normal;
	float:left;
	animation-name:bounce_fountainTextG;
		-o-animation-name:bounce_fountainTextG;
		-ms-animation-name:bounce_fountainTextG;
		-webkit-animation-name:bounce_fountainTextG;
		-moz-animation-name:bounce_fountainTextG;
	animation-duration:2.09s;
		-o-animation-duration:2.09s;
		-ms-animation-duration:2.09s;
		-webkit-animation-duration:2.09s;
		-moz-animation-duration:2.09s;
	animation-iteration-count:infinite;
		-o-animation-iteration-count:infinite;
		-ms-animation-iteration-count:infinite;
		-webkit-animation-iteration-count:infinite;
		-moz-animation-iteration-count:infinite;
	animation-direction:normal;
		-o-animation-direction:normal;
		-ms-animation-direction:normal;
		-webkit-animation-direction:normal;
		-moz-animation-direction:normal;
	transform:scale(.5);
		-o-transform:scale(.5);
		-ms-transform:scale(.5);
		-webkit-transform:scale(.5);
		-moz-transform:scale(.5);
}#fountainTextG_1{
	animation-delay:0.75s;
		-o-animation-delay:0.75s;
		-ms-animation-delay:0.75s;
		-webkit-animation-delay:0.75s;
		-moz-animation-delay:0.75s;
}
#fountainTextG_2{
	animation-delay:0.9s;
		-o-animation-delay:0.9s;
		-ms-animation-delay:0.9s;
		-webkit-animation-delay:0.9s;
		-moz-animation-delay:0.9s;
}
#fountainTextG_3{
	animation-delay:1.05s;
		-o-animation-delay:1.05s;
		-ms-animation-delay:1.05s;
		-webkit-animation-delay:1.05s;
		-moz-animation-delay:1.05s;
}
#fountainTextG_4{
	animation-delay:1.2s;
		-o-animation-delay:1.2s;
		-ms-animation-delay:1.2s;
		-webkit-animation-delay:1.2s;
		-moz-animation-delay:1.2s;
}
#fountainTextG_5{
	animation-delay:1.35s;
		-o-animation-delay:1.35s;
		-ms-animation-delay:1.35s;
		-webkit-animation-delay:1.35s;
		-moz-animation-delay:1.35s;
}
#fountainTextG_6{
	animation-delay:1.5s;
		-o-animation-delay:1.5s;
		-ms-animation-delay:1.5s;
		-webkit-animation-delay:1.5s;
		-moz-animation-delay:1.5s;
}
#fountainTextG_7{
	animation-delay:1.64s;
		-o-animation-delay:1.64s;
		-ms-animation-delay:1.64s;
		-webkit-animation-delay:1.64s;
		-moz-animation-delay:1.64s;
}
#fountainTextG_8{
	animation-delay:1.79s;
		-o-animation-delay:1.79s;
		-ms-animation-delay:1.79s;
		-webkit-animation-delay:1.79s;
		-moz-animation-delay:1.79s;
}
@keyframes bounce_fountainTextG{
	0%{
		transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-o-keyframes bounce_fountainTextG{
	0%{
		-o-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-o-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-ms-keyframes bounce_fountainTextG{
	0%{
		-ms-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-ms-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-webkit-keyframes bounce_fountainTextG{
	0%{
		-webkit-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-webkit-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-moz-keyframes bounce_fountainTextG{
	0%{
		-moz-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-moz-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

<div id="fountainTextG"><div id="fountainTextG_1" class="fountainTextG">M</div><div id="fountainTextG_2" class="fountainTextG">e</div><div id="fountainTextG_3" class="fountainTextG">n</div><div id="fountainTextG_4" class="fountainTextG">s</div><div id="fountainTextG_5" class="fountainTextG">o</div><div id="fountainTextG_6" class="fountainTextG">f</div><div id="fountainTextG_7" class="fountainTextG">t</div><div id="fountainTextG_8" class="fountainTextG">s</div></div>

**

此加载器由纯 css3 java 脚本或其他不包含在其中的库制作。

Answer 1

定义你的 id #fountainTextG

position: absolute;
left: 50%;
top: 50%;
margin-top: -20px;
margin-left: -75px;

这个CSS

	#fountainTextG{
	width: 360px;
margin: auto;
position: absolute;
left: 50%;
top: 50%;
margin-top: -20px;
margin-left: -75px;
}

.fountainTextG{
	color:rgb(242,155,97);
	font-family:Arial;
	font-size:38px;
	text-decoration:none;
	font-weight:normal;
	font-style:normal;
	float:left;
	animation-name:bounce_fountainTextG;
		-o-animation-name:bounce_fountainTextG;
		-ms-animation-name:bounce_fountainTextG;
		-webkit-animation-name:bounce_fountainTextG;
		-moz-animation-name:bounce_fountainTextG;
	animation-duration:2.09s;
		-o-animation-duration:2.09s;
		-ms-animation-duration:2.09s;
		-webkit-animation-duration:2.09s;
		-moz-animation-duration:2.09s;
	animation-iteration-count:infinite;
		-o-animation-iteration-count:infinite;
		-ms-animation-iteration-count:infinite;
		-webkit-animation-iteration-count:infinite;
		-moz-animation-iteration-count:infinite;
	animation-direction:normal;
		-o-animation-direction:normal;
		-ms-animation-direction:normal;
		-webkit-animation-direction:normal;
		-moz-animation-direction:normal;
	transform:scale(.5);
		-o-transform:scale(.5);
		-ms-transform:scale(.5);
		-webkit-transform:scale(.5);
		-moz-transform:scale(.5);
}#fountainTextG_1{
	animation-delay:0.75s;
		-o-animation-delay:0.75s;
		-ms-animation-delay:0.75s;
		-webkit-animation-delay:0.75s;
		-moz-animation-delay:0.75s;
}
#fountainTextG_2{
	animation-delay:0.9s;
		-o-animation-delay:0.9s;
		-ms-animation-delay:0.9s;
		-webkit-animation-delay:0.9s;
		-moz-animation-delay:0.9s;
}
#fountainTextG_3{
	animation-delay:1.05s;
		-o-animation-delay:1.05s;
		-ms-animation-delay:1.05s;
		-webkit-animation-delay:1.05s;
		-moz-animation-delay:1.05s;
}
#fountainTextG_4{
	animation-delay:1.2s;
		-o-animation-delay:1.2s;
		-ms-animation-delay:1.2s;
		-webkit-animation-delay:1.2s;
		-moz-animation-delay:1.2s;
}
#fountainTextG_5{
	animation-delay:1.35s;
		-o-animation-delay:1.35s;
		-ms-animation-delay:1.35s;
		-webkit-animation-delay:1.35s;
		-moz-animation-delay:1.35s;
}
#fountainTextG_6{
	animation-delay:1.5s;
		-o-animation-delay:1.5s;
		-ms-animation-delay:1.5s;
		-webkit-animation-delay:1.5s;
		-moz-animation-delay:1.5s;
}
#fountainTextG_7{
	animation-delay:1.64s;
		-o-animation-delay:1.64s;
		-ms-animation-delay:1.64s;
		-webkit-animation-delay:1.64s;
		-moz-animation-delay:1.64s;
}
#fountainTextG_8{
	animation-delay:1.79s;
		-o-animation-delay:1.79s;
		-ms-animation-delay:1.79s;
		-webkit-animation-delay:1.79s;
		-moz-animation-delay:1.79s;
}
@keyframes bounce_fountainTextG{
	0%{
		transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-o-keyframes bounce_fountainTextG{
	0%{
		-o-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-o-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-ms-keyframes bounce_fountainTextG{
	0%{
		-ms-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-ms-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-webkit-keyframes bounce_fountainTextG{
	0%{
		-webkit-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-webkit-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

@-moz-keyframes bounce_fountainTextG{
	0%{
		-moz-transform:scale(1);
		color:rgb(252,179,116);
	}

	100%{
		-moz-transform:scale(.5);
		color:rgb(255,255,255);
	}
}

<div id="fountainTextG"><div id="fountainTextG_1" class="fountainTextG">M</div><div id="fountainTextG_2" class="fountainTextG">e</div><div id="fountainTextG_3" class="fountainTextG">n</div><div id="fountainTextG_4" class="fountainTextG">s</div><div id="fountainTextG_5" class="fountainTextG">o</div><div id="fountainTextG_6" class="fountainTextG">f</div><div id="fountainTextG_7" class="fountainTextG">t</div><div id="fountainTextG_8" class="fountainTextG">s</div></div>