.overlay {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.7);
        transition: opacity 500ms;
        visibility: hidden;
        opacity: 0;
        z-index: 1000;
    }
    
    .overlay:target {
        visibility: visible;
        opacity: 1;
    }
    
    .popup {
        height: 100px;
        width: 100px;
        margin: 70px auto;
        padding: 20px;
        background: #fff;
        border-radius: 5px;
        position: relative;
        transition: all 5s ease-in-out;
        z-index: 1000;
    }
    
    .popup h2 {
        margin-top: 0;
        color: #333;
        font-family: Tahoma, Arial, sans-serif;
    }
    
    .popup .close {
        position: absolute;
        top: 20px;
        right: 30px;
        transition: all 200ms;
        font-size: 30px;
        font-weight: bold;
        text-decoration: none;
        color: #333;
        z-index: 726261;
    }
    
    .popup .close:hover {
        color: #06D85F;
    }
    
    .popup .content {
        max-height: 30%;
        overflow: auto;
    }
    
    .img1 {
        width: 75px;
        height: auto;
    }
    
    .if1 {
        padding-left: 50px;
    }
    /* customizable snowflake styling */
    
    .snowflake {
        color: #fff;
        font-size: 1em;
        font-family: Arial;
        text-shadow: 0 0 1px #000;
    }
    
    @-webkit-keyframes snowflakes-fall {
        0% {
            top: -10%
        }
        100% {
            top: 100%
        }
    }
    
    @-webkit-keyframes snowflakes-shake {
        0% {
            -webkit-transform: translateX(0px);
            transform: translateX(0px)
        }
        50% {
            -webkit-transform: translateX(80px);
            transform: translateX(80px)
        }
        100% {
            -webkit-transform: translateX(0px);
            transform: translateX(0px)
        }
    }
    
    @keyframes snowflakes-fall {
        0% {
            top: -10%
        }
        100% {
            top: 100%
        }
    }
    
    @keyframes snowflakes-shake {
        0% {
            transform: translateX(0px)
        }
        50% {
            transform: translateX(80px)
        }
        100% {
            transform: translateX(0px)
        }
    }
    
    .snowflake {
        position: fixed;
        top: -10%;
        z-index: 9999;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        cursor: default;
        -webkit-animation-name: snowflakes-fall, snowflakes-shake;
        -webkit-animation-duration: 10s, 3s;
        -webkit-animation-timing-function: linear, ease-in-out;
        -webkit-animation-iteration-count: infinite, infinite;
        -webkit-animation-play-state: running, running;
        animation-name: snowflakes-fall, snowflakes-shake;
        animation-duration: 10s, 3s;
        animation-timing-function: linear, ease-in-out;
        animation-iteration-count: infinite, infinite;
        animation-play-state: running, running
    }
    
    .snowflake:nth-of-type(0) {
        left: 1%;
        -webkit-animation-delay: 0s, 0s;
        animation-delay: 0s, 0s
    }
    
    .snowflake:nth-of-type(1) {
        left: 10%;
        -webkit-animation-delay: 1s, 1s;
        animation-delay: 1s, 1s
    }
    
    .snowflake:nth-of-type(2) {
        left: 20%;
        -webkit-animation-delay: 6s, .5s;
        animation-delay: 6s, .5s
    }
    
    .snowflake:nth-of-type(3) {
        left: 30%;
        -webkit-animation-delay: 4s, 2s;
        animation-delay: 4s, 2s
    }
    
    .snowflake:nth-of-type(4) {
        left: 40%;
        -webkit-animation-delay: 2s, 2s;
        animation-delay: 2s, 2s
    }
    
    .snowflake:nth-of-type(5) {
        left: 50%;
        -webkit-animation-delay: 8s, 3s;
        animation-delay: 8s, 3s
    }
    
    .snowflake:nth-of-type(6) {
        left: 60%;
        -webkit-animation-delay: 6s, 2s;
        animation-delay: 6s, 2s
    }
    
    .snowflake:nth-of-type(7) {
        left: 70%;
        -webkit-animation-delay: 6s, 2s;
        animation-delay: 6s, 2s
    }