CSS Coding Interview Questions and Answers

How do you apply a background color to a webpage?
Use the following CSS code:
```
body {
    background-color: lightblue;
}
           
```

How do you center an element horizontally using CSS?

Use the following CSS code:

.container {
    display: flex;
    justify-content: center;
}

How do you create a grid layout in CSS?

Use the following CSS code:

.container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

How do you make a rounded button with CSS?

Use the following CSS code:

button {
    border-radius: 12px;
    padding: 10px 20px;
    background-color: #008CBA;
    color: white;
    border: none;
}

How do you change the font style of an element?

Use the following CSS code:

p {
    font-family: 'Arial', sans-serif;
    font-size: 16px;
}

How do you create a drop shadow effect on a box?

Use the following CSS code:

.box {
    box-shadow: 5px 5px 15px rgba(0,0,0,0.3);
}

How do you create a responsive grid layout using CSS Grid?

Use the following CSS code:

.container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.item {
    background-color: #f0f0f0;
    padding: 20px;
    border: 1px solid #ccc;
}

How do you create a CSS animation to make an element bounce?

Use the following CSS code:

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-30px);
    }
    60% {
        transform: translateY(-15px);
    }
}

.bouncing-element {
    animation: bounce 2s infinite;
}

How do you create a CSS tooltip that appears on hover?

Use the following CSS code:

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: black;
    color: #fff;
    text-align: center;
    border-radius: 5px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%; /* Position above the tooltip element */
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

How do you create a CSS transition effect for changing background color?

Use the following CSS code:

.transition-element {
    background-color: #4CAF50;
    transition: background-color 0.5s ease;
}

.transition-element:hover {
    background-color: #45a049;
}

How do you implement a CSS flexbox layout for centering items horizontally and vertically?

Use the following CSS code:

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh; /* Full viewport height */
}

.item {
    background-color: #f0f0f0;
    padding: 20px;
    border: 1px solid #ccc;
}

How do you hide an element using CSS?
Use the following CSS code:
```
.hidden {
    display: none;
}
            
```
How do you add padding inside an element?
Use the following CSS code:
```
.container {
    padding: 20px;
}
            
```
How do you apply a margin outside an element?
Use the following CSS code:
```
.container {
    margin: 20px;
}
            
```
How do you style a link without an underline?
Use the following CSS code:
```
a {
    text-decoration: none;
    color: blue;
}
            
```

How do you create a hover effect on a button?

Use the following CSS code:

button:hover {
    background-color: green;
    color: white;
}

How do you create a full-width layout using CSS?

Use the following CSS code:

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

How do you change the color of text in CSS?
Use the following CSS code:
```
p {
    color: red;
}
            
```
How do you add a border around an element in CSS?
Use the following CSS code:
```
.container {
    border: 2px solid black;
}
            
```

How do you create a fixed navigation bar?

Use the following CSS code:

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: #333;
    color: white;
    padding: 10px;
    z-index: 1000;
}