&__form{ width: 100%; max-width: 545px; height: 57px !important; border:1px solid white; display: flex; margin-bottom: 57px; } 

I do not understand what is wrong: when you change the width of the window to a smaller one at a certain moment and when you switch to the site version for tablets and mobile phones, the height of the form is 0.

  • one
    Look at @media requests, if you are using a css framework, check for the presence of styles in html for the form itself and its container (like hidden-xs) - Andrew B
  • code to see the whole, the reasons may be different - HamSter

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