Top 60 HTML & HTML5 Interview Questions & Answers (2022)

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Hi I’m trying to code a Calculator interface I’m facing two problems : 1) why these buttons’ (.,+) dimensions are not accurate 2) why this code :

.style { margin: 0 auto;

is not centering the interface? by the way my browser is Edge Thanks

My html codes:

Calculator interface

7 8 9

4 5 6

1 2 3

0 . ±

× + –

÷ = Clear

.button { background-color: rgb(81, 122, 121); border: 7px solid rgb(213, 236, 213); color: white; padding: 10px 45px; font-size: 25px; }

.button20 { background-color: rgb(36, 117, 117); padding: 15px 32px; text-align: right; width: 285px; height: 45px; }

.button19 { padding: 10px 20px; }

.style { margin: 0 auto; }