estilo.css

/* Estilo da página 1 */
/* Programado por #Eliseu_Zau 03/04/2022 */

/* Classes utilitárias */

.btn-primary{
	background-color: rgba(0,0,0,0.4);
	color: white;
	text-transform: uppercase;
	padding: 5px 25px;
	border: 1px solid white;
	border-radius: 30px;
	margin-left: 5px;
}
.btn-primary:hover {
	background: transparent;
	cursor: pointer;
	color: rgba(255, 255, 255, 0);
}
a:hover {
	color: rgb(2, 2, 2);
	text-decoration: none;
}

.principal button{
	transition: 3s;
}

.principal button:hover{
	box-shadow: 0 0 60px #1ebfdc, inset 0 0 30px #1ebfdc;
	text-shadow: 0 0 15px #1ebfdc;
	transition: 1s;
}

/*========================================= inicio ========================================= */

*{
	padding: 0;
	margin: 0;
	box-sizing: border-box;
	font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif,'Poppins', sans-serif;

}
a{
	color: #fff;
}
.load{
	animation: slide 2s;
}
.slider{
	background-repeat: no-repeat;
	background-size: cover;
	background-position: center;
	width: 100%;
	height: 100vh;
	animation: slide 35s infinite;
}
.content{
	color: #fff;
	width: 100%;
	height: 100vh;
	background-color: rgba(0, 0, 0, 0.5);
}
.principal{
	left: 50%;
	top: 50%;
	transform: translate(-50%,-50%);
	position: absolute;
	letter-spacing: 5px;
	text-align: center;
}
.principal h1{
	font-size: 70px;
	margin-bottom: 20px;
	
}

@keyframes slide{
	0%{
		background-image: url('img_slide/1.jpg');
	}
	20%{
		background-image: url('img_slide/1.jpg');
	}
	20.01%{
		background-image: url('img_slide/2.jpg');
	}
	40%{
		background-image: url('img_slide/2.jpg');
	}
	40.01%{
		background-image: url('img_slide/3.jpg');
	}
	60%{
		background-image: url('img_slide/3.jpg');
	}
	60.01%{
		background-image: url('img_slide/4.jpg');
	}
	80%{
		background-image: url('img_slide/4.jpg');
	}
	80.01%{
		background-image: url('img_slide/5.jpg');
	}
	100%{
		background-image: url('img_slide/5.jpg');
	}
}