responsive html and css code with any devices - html

Question

I want to render my screen responsive with any kind of device, so my code display very good on a big screen but not the same thing with the young screen so I want my screen to be fitted for all sizes.I spend a lot of time to target it but I can't found any solution my code:
* {
box-sizing: border-box;
padding: 0%;
margin: 0%;
background-color: #dfe3ee;
}
.text {
float: left;
margin-top: 200px;
margin-left: 160px;
font-size: 2rem;
font-family: sans-serif;
color: rgb(100, 5, 5)
}
form {
border: 3px solid #f1f1f1;
width: 30%;
display: flex;
flex-wrap: wrap;
flex-direction: column;
margin-top: 5rem;
margin-right: 250px;
float: right;
}
input[type=text],
input[type=password] {
width: 90%;
padding: 8px 12px;
margin: 8px 0;
display: inline-block;
border: 1px solid #ccc;
box-sizing: border-box;
}
button {
background-color: #04AA6D;
color: white;
padding: 8px 10px;
margin: 8px 0;
border: none;
cursor: pointer;
width: 100%;
}
button:hover {
opacity: 0.8;
}
/* Extra style for the cancel button (red) */
/* Center the avatar image inside this container */
.container {
padding: 16px;
}
/* The "Forgot password" text */
span.psw {
float: right;
padding-top: 16px;
}
#media screen and (max-width: 600px) {
span.psw {
display: block;
float: right;
}
.form {
border: 3px solid #f1f1f1;
width: 30%;
display: flex;
}
}
import {Link} from "react-router-dom"; const RegisterPage =() => { return (
<div>
<div className="text">
<h1>Private</h1>
</div>
<form>
<div class="container">
<label for="uname"><b>Username</b></label>
<input type="text" placeholder="Enter Username" name="uname" required />
<label for="psw"><b>Password</b></label>
<input type="password" placeholder="Enter Password" name="psw" required />
<button type="submit">Login</button>
<label>
<input type="checkbox" checked="checked" name="remember" /> Remember me
</label>
</div>
<div className="container" style={{ "backgroundColor": "#f1f1f1"}}>
Forgot password?
<div className="btn">
<button>Create New Account</button>
</div>
</div>
</form>
</div>
) }; export default RegisterPage;

Answer 1

Check this out, I added flexbox for your main div and modified your media query part with flexbox and removed margins. Keep in mind I changed className with class for snipping, for testing in your local you should change them again with className
* {
box-sizing:border-box;
padding: 0%;
margin: 0%;
background-color: #dfe3ee;
}
.mainDiv {
width: 100%;
height: 100vh;
display: flex;
justify-content: space-evenly;
align-items: center;
}
.text{
float: left;
font-size: 2rem;
font-family: sans-serif;
color:rgb(100, 5, 5)
}
form {
border: 3px solid #f1f1f1;
width: 30%;
display: flex;
flex-wrap: wrap;
flex-direction: column;
}
input[type=text], input[type=password] {
width: 90%;
padding: 8px 12px;
margin: 8px 0;
display: inline-block;
border: 1px solid #ccc;
box-sizing: border-box;
}
button {
background-color: #04AA6D;
color: white;
padding: 8px 10px;
margin: 8px 0;
border: none;
cursor: pointer;
width: 100%;
}
button:hover {
opacity: 0.8;
}
/* Extra style for the cancel button (red) */
/* Center the avatar image inside this container */
.container {
padding: 16px;
}
/* The "Forgot password" text */
span.psw {
float: right;
padding-top: 16px;
}
#media screen and (max-width: 600px) {
.mainDiv {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
.text {
margin-left: 0;
}
span.psw {
display: block;
float: right;
}
form{
border: 3px solid #f1f1f1;
width: 30%;
display: flex;
float: none;
margin-right: 0;
min-width: 250px;
}
}
<div class="mainDiv">
<div class="text" >
<h1>Private</h1>
</div>
<form >
<div class="container">
<label for="uname"><b>Username</b></label>
<input type="text" placeholder="Enter Username" name="uname" required />
<label for="psw"><b>Password</b></label>
<input type="password" placeholder="Enter Password" name="psw" required />
<button type="submit">Login</button>
<label>
<input type="checkbox" checked="checked" name="remember" /> Remember me
</label>
</div>
<div className="container" style={{"backgroundColor":"#f1f1f1"}}>
<a href="" >Forgot password?</a>
<div className="btn" >
<button >Create New Account</button>
</div>
</div>
</form>
</div>