Why Does Prism code block increasing width

I am asking question first time in StackOverflow.

I am a WordPress Website Devloper

I insert the prism code block plugin on my website blog. And I get the width problem as shown in the, linked image [With Prism Code Block][1].

After removing the prism code block plugin, linked image [After removing the Prism code block plugin][2].

And I Have also tried to give width in pre style but it's not working in different screen sizes.

<pre style="height: 500px; widht:804px;"> 

I have used this code provided by the prism website https://prismjs.com/

HTML=

<pre style="height: 500px; widht:804px;">        <code class="language-c">
            
  Blink

  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/Blink
*/

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}
        </code>
</pre>

CSS = "https://ift.tt/2LXO6Zo"

JS = "https://ift.tt/396bVHm"