style and decoration using external css link

To put the content inside a box, you should wrap your content inside a <div> element and give it a class name like so:

<div class="box">
...
</div>

And from there, you should be able to define all of its properties in CSS like this:

.box {
    ...
}

Among the properties that you'll need are one to make the background white, another one for padding, making the box have rounded corners, and make it align its elements vertically in a column.

Hi, i've looked in your code and made some changes.

In the Html file put everything inside a div and give it a class of .box :

 <div class="box">
        <img class="image" src="images/image-qr-code.png" alt="QR image">

        <div class="text">
            <h1>Don't wait too much </h1>
            <p>Scann now for more information</p>
        </div>

   </div>

In the CSS file import the font from google fonts and use this font in the body:

@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');

body{
    font-family: "Poppins", sans-serif;
    font-weight: 400;
    font-style: normal;
    background-color: rgb(214, 225, 240);
}

Now... to put the box in the center of the page verticly and horizontaly, Set the body height: 100dvh; and display: grid; and also place-items: center; give the .box class width and height and give the image width of 100% so it will be inside the box without overflowing outside the box.

This is my final CSS Code file:

@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');

body{
    font-family: "Poppins", sans-serif;
    font-weight: 400;
    font-style: normal;
    background-color: rgb(214, 225, 240);
    display: grid;
    height: 100dvh;
    place-content: center;
    overflow: hidden;
}

.box{
    width: 200px;
    height: 310px;
    background-color: #fff;
    border-radius: 10px;
    padding: 10px;

    box-shadow: 0px 0px 15px rgb(46 57 77 / 0.1);
}

.image{
    width: 100%;
    height: auto;
    border-radius: 5px;
}

.text{
    padding: 10px;
}

h1{
    text-align: center;
    font-size: 16px;
    margin-top: 0;
    color: #2d384b;
}

p{
    text-align: center;
    font-size: 13px;
    line-height: 15px;
    margin-top: 0;
    margin-bottom:0;
    color: #909092;
}

Take it and play with it - I hope you like it 🚀😉