style.css

* {
    padding: 0;
    margin: 0;
    border: 0;
    box-sizing: border-box;
    list-style: none;
    text-decoration: none;
}

body {
    background-image: linear-gradient(to left, #774c0bd7 50%, rgba(157, 131, 78, 0.332) 50%);
    font-family: 'montserrat';
    background-size: auto;
}

header {
    padding-top: 2.5rem;
    padding-left: 2.5rem;
    padding-right: 2.5rem;
    display: block;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo>h1 {
    font-size: 4rem;
    font-weight: bolder;
    color: #112f50f3;
    cursor: pointer;
}

.navbar .mainmenu {
    display: flex;
    list-style: none;
}

.navbar .mainmenu>li>a {
    display: inline-block;
    padding: 1rem;
    text-decoration: none;
    text-transform: uppercase;
    color: #112f50f3;
    font-size: 1.5rem;
    font-weight: bold;
}

.navbar .mainmenu>li>a:hover {
    background-color: rgb(205, 157, 68);
    border: 0.0625rem solid whitesmoke;
    border-radius: 0.4rem;
    color: whitesmoke;
}

.navbar .openmenu {
    font-size: 2rem;
    color: #112f50f3;
    display: none;
    cursor: pointer;
}

.navbar .mainmenu .closemenu {
    font-size: 2rem;
    color: #112f50f3;
    display: none;
    cursor: pointer;
}

.navbar .logo {
    margin: 0.5rem;
    cursor: pointer;
}

.clock {
    width: 44%;
    height: auto;
    margin-left: 28%;
    margin-right: 28%;
    padding-bottom: 0.15rem;
    display: flex;
    background-color: inherit;
}

.clock>img {
    width: 100%;
    height: auto;
}

.word {
    display: grid;
    padding: 2rem;
    justify-content: center;
    grid-template-areas: "hdr hdr hdr"
        "main main main"
        "foot foot foot";
}

.one {
    grid-area: hdr;
    margin-left: -80%;
    position: relative;
    display: flex;
    justify-content: start;
    align-items: center;
}

.two {
    grid-area: main;
    display: flex;
    background-color: #a6ccf24f;
    border: 0.0625rem solid #50a3f6;
    border-radius: 5%;
    backface-visibility: hidden;
    justify-content: center;
    align-items: center;

}

.three {
    grid-area: foot;
    margin-left: 202%;
    position: relative;
    display: flex;
    justify-content: end;
    align-items: center;

}


p {
    font-size: 3rem;
    color: #112f50f3;
}


/* media for hamburger */

@media (max-width:800px) {

    .navbar {
        flex-direction: column-reverse;
    }

    .navbar .mainmenu {
        height: 100vh;
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        z-index: 10;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: linear-gradient(to left, #774c0bd7, rgba(157, 131, 78, 0.332));
        backdrop-filter: blur(8px);
        transition: top 1s ease;
        display: none;
    }

    .navbar .mainmenu .closemenu {
        display: block;
        position: absolute;
        top: 1.25em;
        right: 1.25em;
    }

    .navbar .openmenu {
        display: block;
        align-self: flex-end;
    }

    .navbar .mainmenu>li>a:hover {
        background: none;
        color: white;
        font-size: 1.6em;
    }
}



/* media for 320px */

@media screen and (min-width:320px) {
    html {
        font-size: 70.5%;
    }
    
    .clock {
        width: 90%;
        margin-left: 5%;
        margin-right: 5%;
        padding-top: 1.5em;
    }

    .word {
        padding: 1em;
    }

    p {
        font-size: 2.5em;
    }
}



/* media for 375px */

@media screen and (min-width:375px) {
    html {
        font-size: 80%;
    }
    
    .clock {
        width: 84%;
        margin-left: 8%;
        margin-right: 8%;
        padding-top: 2em;
    }

    .word {
        padding: 1.5em;
    }

    p {
        font-size: 2.5em;
    }
}



/* media for 425px */

@media screen and (min-width:425px) {
    html {
        font-size: 80%;
    }
    
    .clock {
        width: 80%;
        margin-left: 10%;
        margin-right: 10%;
        padding-top: 1em;
    }

    .word {
        padding: 2em;
    }
    p {
        font-size: 2.7em;
    }
}


/* media for 625px */

@media screen and (min-width:590px) {
    html {
        font-size: 85%;
    }
    
    .clock {
        width: 66%;
        margin-left: 17%;
        margin-right: 17%;
        padding-top: 1em;
    }

    .word {
        padding: 1em;
    }
}


/* media for tablet */

@media screen and (min-width:768px) {
    html {
        font-size: 90%;
    }
    
    .clock {
        width: 64%;
        margin-left: 18%;
        margin-right: 18%;
        padding-top: 1em;
    }

    .word {
        padding: 1em;
    }
}


/* media for normal screen */

@media screen and (min-width:1024px) {
    html {
        font-size: 100%;
    }
    
    .clock {
        width: 56%;
        margin-left: 22%;
        margin-right: 22%;
        padding-top: 1em;
    }

    .word {
        padding: 1em;
    }
}


/* media for large laptop */

@media screen and (min-width:1440px) {
    html {
        font-size: 140%;
    }
    
    .clock {
        width: 60%;
        margin-left: 20%;
        margin-right: 20%;
        padding-top: 0.5em;
    }

    .word {
        padding: 1em;
    }
}


/* media for 4k */

@media screen and (min-width:2560px) {
    html {
        font-size: 250%;
    }
    
    .clock {
        width: 76%;
        margin-left: 12%;
        margin-right: 12%;
        padding-top: 2em;
    }
}