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Html – Why does the webpage I created have whitespace on mobile view?

I tried writing some code for a webpage and it looked good on desktop view but I noticed that in mobile view, the right half of the page is whitespace. To fix this, I have tried to make the parent elements width ‘100%’ and the child element width to ‘auto’, as you can see from the code below.

*   {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

li, a, button, input    {
    font-family: "Helvetica", sans-serif;
    text-decoration: none;
    font-size: 18px;
    color: azure;
    font-weight: 500;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 7%;
    background-color: cadetblue;
    width: 100%;
}

.logo   {
    cursor: pointer;
    width: 70px;
    height: 70px;
    margin-right: 100px;
}

.nav    {
    list-style: none;
}

.nav li {
    display: inline-block;
    padding: 0 20px;
}

.nav li a {
    transition: all 0.35s ease 0s;
}

.nav li a:hover     {
    color: greenyellow;
}

button  {
    background-color: greenyellow;
    color: azure;
    transition: all 0.3s ease 0s;
    padding: 10px 25px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
}

button:hover    {
    background-color: darkseagreen;
    opacity: 0.8;
}

.box    {
    margin-left: 100px;
    margin-right: 20px;
    height: 40px;
    width: auto;
    padding: 10px 20px;
    background-color: azure;
    border-radius: 30px;
    box-shadow: 0 10px 25px rgba(112, 128, 144, 0.3);
    color: black;
}


.box input  {
    width: 0;
    outline: none;
    border: none;
    font-weight: 500;
    transition: all 0.3s ease 0s;
    background: transparent;
}

h1  {
    color: greenyellow;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 150px;
    text-align: center;
    margin: 150px auto;
    width: auto;
}

p   {
    font-family: Helvetica, Arial, sans-serif;
    font-size: 40px;
    text-align: center;
    margin-bottom: 100px;
}

main    {
    background-color: blanchedalmond;
    padding: 100px;
    width: 100%;
}
<header>
    <img class="logo" src="logo.svg" alt="logo">
    <nav>
        <ul class="nav">
            <li><a href="#">Home</a></li>
            <li><a href="#">Services</a></li>
            <li><a href="#">Project</a></li>
        </ul>
    </nav>
    <input class="box" type="text" placeholder="search">
    <a href="#"><button>Search</button></a>
</header>
<main>
    <h1>Hello World</h1>
    <p>Our app will help Road desing engineers to manage traffic. 
        This app will use AI technology to plan roads and traffic lights, 
        so you won't have to wait in traffic.
    </p>
</main>
Tags:

2

Answers


  1. 0

    CSS utilizes @media queries to adapt styles for various screen sizes. By defining the same CSS classes with different properties within these queries, you can tailor your styling specifically for smaller screens.

    @media screen and (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 20px;
    }
    .nav li {
        padding: 10px 5px;
    }
    .box, .logo {
        margin-left: 0;
        margin-right: 0;
    }
    main {
        padding: 50px 20px;
    }
    h1 {
        font-size: 50px; /* Adjust based on your preference */
        margin: 50px auto;
    }
    p {
        font-size: 20px;
    }
}
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  2. 0

    Use media query css to fix responsive screen issues, have a look changed code.

    *   {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

li, a, button, input    {
    font-family: "Helvetica", sans-serif;
    text-decoration: none;
    font-size: 18px;
    color: azure;
    font-weight: 500;
}

header {
    display: flex;
    justify-content: space-between;
    flex-wrap:wrap;
    align-items: center;
    padding: 20px 7%;
    background-color: cadetblue;
    width: 100%;
        align-items: center;
}

.logo   {
    cursor: pointer;
    width: 70px;
    height: 70px;
    border: 1px solid #fff;
}

.nav    {
    list-style: none;
}

.nav li {
    display: inline-block;
    padding: 0 20px;
}

.nav li a {
    transition: all 0.35s ease 0s;
}

.nav li a:hover     {
    color: greenyellow;
}

button  {
    background-color: greenyellow;
    color: azure;
    transition: all 0.3s ease 0s;
    padding: 10px 25px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
}

button:hover    {
    background-color: darkseagreen;
    opacity: 0.8;
}

.search    {    
    padding: 10px 20px;    
}


.search input  {
    padding: 10px;
    background-color: azure;
    border-radius: 30px;
    box-shadow: 0 10px 25px rgba(112, 128, 144, 0.3);
    color: black;
    margin-right:10px;
}

h1  {
    color: greenyellow;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 150px;
    text-align: center;
    margin: 150px auto;
    width: auto;
}

p   {
    font-family: Helvetica, Arial, sans-serif;
    font-size: 40px;
    text-align: center;
    margin-bottom: 100px;
}

main    {
    background-color: blanchedalmond;
    padding: 100px;
    width: 100%;
}

@media only screen and (max-width: 767px) {
main {padding: 20px;}
h1{font-size: 50px; margin: 20px 0;}
p{font-size: 16px;}
}
    <header>
    <img class="logo" src="logo.svg" alt="logo">
    <nav>
        <ul class="nav">
            <li><a href="#">Home</a></li>
            <li><a href="#">Services</a></li>
            <li><a href="#">Project</a></li>
        </ul>
    </nav>
    <div class="search">
    <input class="box" type="text" placeholder="search">
    <button>Search</button>
    </div>
</header>
<main>
    <h1>Hello World</h1>
    <p>Our app will help Road desing engineers to manage traffic. 
        This app will use AI technology to plan roads and traffic lights, 
        so you won't have to wait in traffic.
    </p>
</main>
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