style.css

* {
    margin: 0;
    padding: 0;
}

#color-logo {
    animation-name: logo;
    animation-duration: 10s;
    animation-iteration-count: infinite;
    background-color: orangered;        
    border-bottom: 2px solid orchid ;
    border-top: 2px solid orchid ;
    border-collapse: separate;
    box-sizing: border-box;
    height: 5rem;
    font-size: 1rem;
    width: 100%;   
}

@keyframes logo {
    0%   {background-color: rgb(175, 64, 24);}
    25%  {background-color: rgb(177, 209, 61); font-size: 1.3rem;}
    50%  {background-color: rgb(168, 46, 97); font-size: 1.4rem;}
    75%  {background-color: rgb(36, 136, 150); font-size: 1.3rem;}
    100% {background-color: rgb(197, 73, 28); font-size: 1rem;}
}

#color-logo >  h1 { 
    color: #fff;
    font-family: 'Amatic SC', cursive;
    padding: 20px;
    text-align: center;
    width: auto;
}


.background {
    background-image: url("https://media.cntraveller.in/wp-content/uploads/2016/01/spacelead-866x487.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    bottom: 0;
    filter: brightness(200%);
    left: 0;
    position:fixed;  
    right: 0;
    top: 0;
    opacity: 0.1;
    z-index: -1; 
}

.container {
    display: flex;    
    flex-wrap: wrap;
    height: 100%;
    justify-content: center; 
    padding-top: 20px;    
    position: relative;
    width: 100%;  
}

.container::window-inactive{
    filter: blur(5px)
}

.container  img {
    border: 3px double rgb(53, 236, 77);
    border-collapse: separate;
    border-radius: 5px;
    height: 20em;
    margin: 20px;
    transition: all 1s;
    width: 30em;
}

img:hover{
    box-shadow: 5px 5px 15px black;
    transform: scale(1.1); 
}

img:active{
    border:none;
    box-shadow: 200px 200px 200px black;
    transform: scale(1.7);
}