html background color

HTML
<html>
 
<body style="background-color:red;">
  <p> test <p/> 
  <body/>
  </html><body style="background-color: #fff">
  <!---this will change the body color---!>

</body>@keyframes bgcolor {
    0% {
        background-color: #45a3e5
    }

    30% {
        background-color: #66bf39
    }

    60% {
        background-color: #eb670f
    }

    90% {
        background-color: #f35
    }

    100% {
        background-color: #864cbf
    }
}

body {
    -webkit-animation: bgcolor 20s infinite;
    animation: bgcolor 10s infinite;
    -webkit-animation-direction: alternate;
    animation-direction: alternate;
}background-color=red;
<body style="background-color: anything you want">
	[insert 10000 lines of code here]
  
</body>html,body {
  background-color: red;
}
Source